She doesn't have much carbon-14 in her stores to work with, but yes, she could. Although now she's sort of craving charcoal.

She steps in, voice smoother and softer and a little lower. 

"I think it would probably be pretty easy to use this ability to create a sizeable explosion, amongst other things. We& received a dream featuring a mentor figure teaching us something of how to use our powers, but I don't have any specific intelligence regarding who if anyone else has these abilities and what they, if they exist, are doing with them. I don't have any particular reason to believe that the mere existence of the abilities or their ordinary use is of any particular danger above and beyond the risk of people putting to use the things they manufacture." 

"Ah, I see. Thank you. In that case, I'm going to share this call with the risk-management team, just in case. In the mean time, since there's no urgent risk — what other support do you need right now? I see that you're calling from Back to the Mountain City; do you want me to put you in touch with the appropriate part of the local government?"

"That would be appreciated, thank you." 

A pause, her focus flowing out a little to feel her body and the little exciteable stressable ball that is Lazuli's presence in the back of her mind. 

"I don't think we need any particular support? It'd probably be a good idea to get a second set of eyes looking over everything and confirming that the objects I make aren't hazardous or defective somehow, and help with acquiring resources to test things with would be nice, if it turns up clear? And then there's administrative things about running a business that I'd probably have to sort out eventually that I don't have the best idea of how to go about. But that's hardly anything urgent, just a reasonably predictable future thing to deal with." 

"Still, it makes sense to worry about. I'm sending a message to our[ex] contact in the Back to the Mountain City Department of Bureaucratic Weirdness, and pushing their contact info to your& phone. You can call them to sort out any legal questions you have, about the status of your powers or about what business resources are available in your area."

"... and the risk-management team just got back to me, and they're also interested in testing to see whether your created items are safe, and some of the limits on what you can do, in particular around the maximum possible size. Are you familiar with the hazardous materials laboratory at the Back to the Mountain City University campus? If you have the time, I can schedule you to meet with local Emergency Services personnel and some of the researchers there to do those tests."

"Haven't had much reasons to be there exactly, but should be able to find my way there well enough. An appointment would be helpful, thank you - don't expect our schedule to be particularly tight, right now, and figuring this out is the most important thing on our plate, as you might imagine."

"Beyond that... Anything you recommend I do with my powers and/or the created objects before then? If we're worried about them being harmful, I can reabsorb everything I've made and just not make more until I'm at the lab? Though might be helpful to have an already made object somewhere, and I could see the argument for just not touching anything more until I've got people looking over my shoulder, as it were." 

"My official recommendation is to stop doing anything more, because the current situation looks safe and we have no idea what you are actually doing. But since you have instruction from a, uh, dream mentor, you may have an advantage as far as determining what is safe here. Do you live with anyone who could potentially be exposed, if you were to leave the items you have already created where they are?"

"And I've made the appointment for an hour from now; I'm pushing the details to your phone. If you have trouble getting there, hit the 'call back' button and your call will be routed to someone with context who can help. Don't worry if you end up running a bit late; as you said, this is currently the most important important thing on a lot of people's plates."

She shakes her head.

"No. Lucky enough to have my own place." 

She checks the details, and plugs them into a mapping app. Shouldn't be too hard to get things working out - she freshen herself up in the shower and throw on a new outfit before setting off for the lab. 

She slips forward, combing her dyed-blue hair back, easing the cyan streams down along her shoulders and making sure that her light up hair ornament is settled in neatly. With a little catch of breath, she slips on fresh underwear, and a blue and silver work dress. She spills a well worn purple scarf around her shoulder. There's something all too easy about slipping into work and clearer purposes, but this, if any time, is the time to be professional, where she can. 

She packs the hammer up in a small black backpack, and sets out on her trip, before fading back into Quicksilver's arms. 

The train system is the same as it ever was.

The hazardous materials lab turns out to be right on the edge of the city's industrial district, for obvious enough reasons. She's greeted by a cheerful emergency services worker in the standard purple-and-black skin-covering pants-having uniform, who shows her into lab one.

The lab is occupied by a wiry, happy person with the shaved head of a researcher who works with exciting chemicals and doesn't want to fuss with hairnets.

"Good morning! I'm Volhmelan. You must be the person with mysterious superpowers that we're here to test?"

"Mhm!" 

She pauses, then musses her hair a bit bashfully.

"Though honestly, I'm a little emotionally if not intellectually surprised everyone has been this credulous. Even if it makes sense, there's a sort of... shift in genre in how the world is treating things around me that's a little disorienting, I guess." 

"I mean, I guess that makes sense."

Volhmelan pauses for a moment to work out what to say. Being a materials science lab technician does not usually require interacting with new people very much.

"But it seems like a lot of work just to get slapped with a fine for lying to Emergency Services if we put you in front of the cameras and stuff here and you fail to produce anything. Speaking of which, I just want to confirm that you're okay being recorded and having the results of any tests shared with the — what was the group?"

"The Emergency Services Unexpected Risk Management Team," the emergency services person supplies.

"Right, them. Is that all fine? I figure that we'll start with the wide-spectrum camera and a geiger counter, and then move onto more specialized tests if they seem indicated."

"Yeah, that's fine." 

She grins and bounces a bit, before pulling out the hammer. 

"Prrrrrrobably best thing to do for now would be to repeat the demo I did on the call, and then take requests after that?"

She obligingly (if wigglesomely) waits for them to have everything set up. 

Volhmelan makes sure everything is recording, and then gives her a thumbs up.

"Go for it!"

She repeats the process! 

She doesn't try for exactly atomically the same, more the same sense of relative warping, the same general expression of the idea of it. Though actually... does it feel like she can make something exactly to a mathematical value, or exactly copy something she's absorbed and/or made before, or is it a loosegoosier thing? 

She can make things as exactly as she can conceptualize them. But that doesn't seem to extend to automatically conceptualizing things she breaks down in any more detail than is provided by just looking at them and knowing what they're made of.

"... aaaaaaaahhhhh! Empathy failure! Now I'm getting the feeling you were talking about earlier. Wow."

They take a moment to shake out their hands in a self-soothing way. Then they check the cameras. That sure is a spontaneously appearing object with no apparent mechanism.

"Uh, let me get the geiger counter ..."

They wave it over the created mug for a minute.

"No higher than background. And none of the chemical leak alerts fired, not that that was very likely. Can you do a bigger object on the workbench there, just to be sure? Two meters cubed, or as big as you can make it."

She laughs warmly, and nods along. 

"Experiences coming from faerie are... kind of the same thing? But that doesn't make it that much less strange, honestly, just something I'm more settled into. " 

Sure! She doesn't have that much stocked up, but she can make a decently big cube wrapped in glass, filled with clumps of ceramics and cardboard and whatever else ended up in there. 

That continues to be a perfectly normal object. Or, well, it's a weird cube of mixed materials, but it's not apparently hazardous.

They share as much, and then run through a series of other tests: seeing whether creating or absorbing objects directly releases anything harmful (it doesn't) and checking whether her weight goes up and down when she absorbs and creates things (it doesn't).

"So ... you mentioned being potentially able to make explosions, I was told? Now that we know your safe stuff is safe, do you want to try making something explosive intentionally?"

She half-flinches back a little, before taking a steadying breath.

"Oh um... I don't think I mentioned how that would work? Pretty much every way that I think I could do it would require more technical expertise or materials than I have, but..." 

She vibrates a little, then plays her hands together fussily. 

"I could create conventional explosives, with the materials or things processable into the materials, and a general sense of what ingredients go into it? I could theoretically put together two different parts of a chemical reaction, which could probably be made to be pretty energetic, especially if the process is instaneousish or suspends physics in some way? I might be able to make something in a compressed state, and there's things you could do with that? I can also bundle materials by atomic mass and element, so theoretically, I could completely skip conventional enrichment processes for making a nuclear weapon, or concievably make some sort of super critical material and blow myself up horribly? Of those... I guess it's probably worth testing relatively small amounts of compression and double checking everything works chemically as expected? The rest... less sure about those." 

"Ah, that all makes sense. Let's test whether you can make things under compression, in tension, or in motion, and then check whether the stuff you make is chemically normal."

Some brief checks reveal that the thing she makes have to be stationary and already at an equilibrium ... but she can make a spring pre-compressed if she also makes a retaining bracket for it, so that it will not move when created, but will move when released. She can also make things that are balanced unstably such that they fall over as soon as the air shifts.

Volhmelan documents all this as thoroughly as they can.

"Alright. The chemistry tests are going to have to be a little bit more in depth. I mean, we can check that you can create, say, weak acids and test that with a pH strip, but testing that everything is completely chemically normal will take longer. Mug of weak acid, please?"

She could probably still say, make a pressure cannister, though, right? You could probably design something like that to fail destructively on command, or otherwise do something nasty. 

She doesn't know the chemical composition of most any of such things offhand, but after a quick search, she can make some acetic acid, sure. 

She can definitely make a pressure canister! And she can do, for example, little retaining latches made of ice so that they melt open after a moment. Or just really tall things that fall on people.

Volhmelan pronounces her acetic acid to be acidic, and asks her to make a number of other small samples of organic materials to test in more detail.

"It's possible that you'll create dexter isomers of biological materials," they explain, "which would often be poisonous. I mean, not all of them — some dexter isomers are medically useful, and most are non-bioactive, but still."

The Emergency Services worker has been taking notes.

"So it sounds like she could probably make dangerous things with a bit of thought, but as long as she's careful not to make objects fall on anyone and have any springs be securely restrained, she's unlikely to make anything dangerous by accident — excepting perhaps biologicals, which need to be tested for helicity. Does that sound accurate to both of you?"