Eva's decorating for a party. It's not commemorating anything special, like a birthday, but who needs an excuse for a party? It's just a regular party, with lots of people, and of course it's going to be great because Eva is involved in the planning and organization. Sitting on the floor, she's drawing geometric shapes nearby, seemingly at random, though they seem to be forming some sort of pattern. Her phone buzzes, so she gets it out and responds to a text, then continues drawing. She finishes the circle she was working on.
And she is back with large quantities of stuff. If the de- and re-summoning works fine, he can take it back in batches. "I'm baaack," she says, still being somewhat ridiculously happy over the whole thing.
"Okay, so." He levitates a significant chunk of the stuff in front of him, touching it. "I wrote out a new circle that will get me and only me. When you want to summon me again, draw most but not all of the circle on a flat surface in any material, then write out the script around it, then finish the circle. It'll call me, and I might not answer immediately so just leave it until I do. And I'll need a few hours to exchange all this food for futuretools... Unsummoning me works by wanting me gone for a solid minute."
He hands over the tablet, which just shows a list of documents and a password form, and says, "Yep."
"Okay! Again, in case something goes wrong, thanks so much!"
Then she gets to focusing on him gone.
And she now has a few hours to kill.
She decides to look at some of the documents on the tablet thing. If she can glean any information with her high-school level of science, or through that and heavy use of the internet, it could definitely help her work out how to use it and distribute it. It's not as balancing or obviously geared towards altruistic goals, but it should definitely allow her to gain influence and focus on other things separately.
... Hydrocarbon batteries sound interesting, actually.
Hydrocarbon batteries have an energy storage capacity of something like five times as much as lithium-ion batteries, and can be refilled with most things that are burnable if you don't have access to a charger.
The medicines just look confusing, high school science and the internet only helps understand what the documents are even talking about so much. There are five kinds of antibiotics there, though, and antibiotic resistance is fairly a big worry in the medical community.
Eva's heard of MRSA and things in a similar vein to that, so she understands the significance of the antibiotics. After actually thinking about the batteries a bit, she realizes the potential scale, and deems it... rather ridiculous.
Eeeee. So rich. (And so much more ability to do things. But rich, too. Eee.) Plus, that's only if she can't resummon him. There's nobody around, so she might as well do a little dance.
Eventually, the few hours have elapsed. She grabs a permanent marker and goes into her garage. After drawing most of the circle, then the words around it, she completes it, hoping that she did it properly – why did she not write it down? Because it sounded so simple, that's why.
Yeah. That he did.
She is nnnot freaking out. She has her phone, so she's just gonna wait here. For a while. A really long while, if it turns out not to work.
After about five minutes, he appears, levitating a big crate. "Hello again, summoner."
"Hello!" she says, totally not having freaked out for those five minutes. "... Wait, didn't I introduce myself? I'm Eva."
"I'm Nick, nice to meet you. I didn't get as much as I'd hoped for the food. It's not nothing, though, and I do have a deal worked out with someone for the rest."
"I can always get more. I mean, I think it's probably important enough. So. I admit I haven't really planned through what I'm going to do, or rather what we should do, with the fact that you're a telekinetic fairy with alternate-universe future knowledge."
She summoned him, okay? She's not literally staking a claim to him, but she'd like to be included in things.
The phrasing gets an eyebrow-raise. "Given that you can send me away relatively easily I probably won't go haring off and doing things you disapprove of. Plus, wings, who would take me seriously? And I'm not the only fairy, you could summon more, and other kinds, if I can tone my paranoia down from twelve and explain bindings really really well. But the other kinds of daeva are all three harder to pay, more likely to want to cause mayhem, and more dangerous if they manage it."
She at least corrected to we!
"Yeah, I guess. I mean, depending on how large-scale your telekinesis is, you could do a lot of damage. You accelerated me kinda ridiculously, and if you did that and didn't decelerate me..." She shakes her head. "I don't even have to be particularly creative."
"I could ignite the atmosphere. Things moving through air at a significant fraction of C... The second kind changes things. They can remodel your house on the cheap... Or turn you into a piece of living furniture, or make live radioactive material. The last kind makes things. 'Things' includes 'black holes'."
Eva opens her mouth. Then shuts it.
Then opens it again. And shuts it.
Finally, she talks: "Oh. Rrright."
"That is why I'm being so paranoid here. Let's stick with technology or being exquisitely careful and not publicizing summoning for a few years, at least."
"Yyyyeah. I vote that. Um. So. The bindings presumably stop them from doing these things?"
"Yes, but I don't think I should explain further at this time. I hardly know you... We could fix that."
Okay, that sounds like flirting, but it feels ambiguous. "I'm eighteen, I'm a senior at the high school I go to... I do lots of parties? They're fun. I'm not literally all about them, though."
"I'm... I lost track, three twenty or so. I'm actually a big nerd about science and technology. Spend most of my time tinkering or watching old comedies when I don't take summons. But I more meant, spend some time attempting to kick-start the tech here, build a little trust. I still need to make a second trip with the rest of the food, by the way."
"Yeah. Uh. It's getting kinda late, and I'm not sure what I can actually do on this end without a lot of long-term planning or your powers. It might be best if you went back with more food – maybe you could go back and forwards a few times to take all the stuff, then we meet up again tomorrow after you've traded it?"