She is sitting in the library, studying. It's her most common pastime, by hours; spending time with her sister is more enjoyable but Jaromira prefers to socialize more broadly and Katarzyna would only get in the way. This is better on net; the two of them share a room, so it isn't as though her sister's time is entirely hogged by the other girls who call this boarding school "home." Or at least "prison." Katarzyna doesn't mind it, though; the school library is excellent, and basic manners and care for the books has endeared her to the librarian to a sufficient degree to lubricate the interlibrary loans process when there's something she wants to read that they don't have.
Katarzyna beams at her for a bit before directing her attention back to trying to find a map.
There is a map over there!
"I don't know which of these stores sell glowsticks. Like, I can rule out the Rainforest Café, but..."
"I don't either...I suppose a dollar-store type might, and a party supply store probably would, but I don't know how to identify either of those."
"Dollar stores usually have 'dollar' in the name. I don't see one here but there's one near the grocery store we go to?"
"Try that, and keep an eye on the stores we pass on the way out for looking like they might sell glowsticks?"
"Sounds like a plan."
They try Hot Topic on the way out but it lacks glowsticks.
"Do you know what more buildings should have? Roof exits for flying magical girls," Katarzyna comments when they've made it to the doors.
Isabella follows and leads her to the dollar store, which does carry glowsticks. Now they have glowsticks!
Isabella can stop a glowstick!
"I wonder if you can stop the light partway out from the glowstick--then you wouldn't need a radiation suit, you could just stop any radiation in your vicinity."
"Mm. Unfortunate. I wonder if it would be possible to create something with the effect of a hazmat suit that was pretty enough..."
"I've never heard of anything like that - there was an attempt with spacesuits but they didn't pull it off with current tech."
"Hmm. Well, another possibility would be if some other magical girl had a defensive power that worked on radiation and could shield you."
"That would work, yup! Is there some disaster I didn't hear about or do you just not like that Chernobyl lurks?"
"Nuclear power is a valuable thing but both the possibility of something going wrong with a nuclear plant and the possibility of something going wrong with a nuclear weapon are low-probability extremely-high-danger scenarios--I don't think either of them are going to happen any time soon, the latter more than the former, but if they did I would prefer that the people who deal with these things have plans to effectively deploy you, if you're alright with being deployed."
"I would happily deploy in those situations. Uh, I do have to sustain my power, so hopefully there'd be some way to clean up whatever I was stopping before I had to sleep."
"I wonder how one goes about contacting aid organizations for things like this. ...I wonder if the Red Cross has some kind of database of magical girls with relevant powers and a phone number to call if you want to be in it."
"They should but I might need a state ID that says I'm magic and I haven't gotten around to that."
"--If it turns out my metamagic works on swarms and I can nullify swarm magic I think I probably am obliged to at least let the Coast Paladins know I exist."