"I regret that part of my life so much. Nevertheless, it worked, and what better way to atone for my sins than by using the same thing to perform a major act of good?"
"And, to be clear, you will definitely not just kick up already settled ash, or anything, just put it down out of the air?"
"And your fine control is up to handling supervolcano ash without downing airliners, starting tornadoes, causing droughts, etcetera? I have no exposure to popular media in your world nor a background understanding of how powers in your world work generally."
"Gale Force was feared because she was good at what she did, not because she was a walking natural disaster," Marie confirms. "It's...Hmm. Okay, imagine your body was acting as a habitat for some kind of small person before you were abruptly inhabiting it. And you have experience abruptly inhabiting bodies, it's not a shock, you don't startle. And you're an Olympic-level gymnast. Can you lift your arm without randomly spasming, and then put it down again?"
"Okay. Do you need me to put you anywhere in particular for you to do this? Is this thing going to be inside my weight limit?"
"As long as it's on the same continent as the ashfall it should be fine. And I don't know what your weight limit is, but it can be carried. Not that easily, but it can." She requests the relevant object from bar. It is a humming device about the size of three briefcases laid on top of each other. Several wires and leads extend from the device. She leaves them untouched. "It's better if I don't actually use it until I'm not going to have to walk anywhere."
"Okay, well, our parents aren't home, so if you can do it from indoors, I don't need to teleport you anywhere, I can just hold the - actually, Alli, half your attention, please?"
Alli splits, Bella points at one, and that one goes and holds the door open.
"Okay, I can put you in the yard. ...My sense of place does not think I can teleport past the threshold there, it must not count as being in the same gravity well, we will have to walk."
And when she's stepped past the threshold, she, passenger, and device are in the backyard in the very ashy Pacific Northwest.
"I can get you a face mask but maybe you don't need one."
She carefully attaches the leads to various points on her body--her temples, a few pulse points--and feels it take effect.
She is the wind.
She has a flesh body, of course, but she pays it no more attention than you would give your little toe. She is the wind, and the wind is heavy with ash.
This needs to stop.
Carefully, as her consciousness settles into the ten feet or so above where the ashpiles have already settled, she stills it, noting the way the air was moving before so she can put it back later. Winds gather the particles into clumps, letting them fall from the sky like black snow. The still zone rises as the ashlevel gets higher, always leaving a safe zone. The ash over areas not devastated already is carefully herded over to the destruction before being shaken from the sky.
When she is done, she takes a moment to remember where her body was, and fumbles for a moment before turning the machine off.
"Ngh," she winces. Coming down like that--becoming merely human again--was always the not fun part. She checks her watch. It's several hours later.
Bella is sitting nearby, with a book. "Hey. I forgot to ask how long that would take but fortunately your girlfriend had a guess. How'd it go?"
"Awesome. I hope Lorica doesn't feel redundant; there's still a lot of ash on the ground and I can bring her little robot to places that might need that to not be the case, but this is a bigger deal. Back to Milliways?"
Bella teleports them and the object to the door, where an Alli is sitting with a Gameboy. In they go.
"There you are," says Lorica. "I'm not sure if we have the same fingerprints and I want to lock this to you so it'll behave for you and not obey random passersby, give me your hand." With Flicker's hand, she puts palm to a flat part of the roomba-like object, now otherwise finished. It bleeps.