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.
"Anyway!" interrupts Mercedes. "Nobody ever made it to the Olympics through chitchat! Fliers in the air, pedestrians on the track, reconvene in thirty minutes for targets and style presentations."
Isabella shrugs and takes off.
It's a little hard to chat in the air. Isabella gets close to Katarzyna anyway and calls, "So what's your range on the sense?"
"I don't have a watch--I did, but I carelessly got rid of it when I first starscaped and haven't found a sufficiently aesthetic replacement yet--but I did note the intersection."
She names it. "--But we were actually about half a block away from the intersection itself when I sensed you all."
"Still a decent ballpark. Okay, that might be longer than your swarm sense, I wonder if it works on swarms."
"No, I simply want the maximum warning possible. Additionally, I prefer to have more rather than less information as a general principle."
"I've been spending a mildly embarrassing fraction of the previous twenty-two hours fantasizing about becoming so beautiful that my sense solves all of the persistent mysteries of magic."
"Well, it used to be 'why are crytpids a thing,' but after becoming a magical girl I have to say it has changed to 'why does magic care about how pretty I am'."
"I wouldn't be surprised if they have a deeper than average understanding of magic's sartorial preferences, due to having a stronger reason to care and an absurdly high magical-girl-per-capita ratio, and given that magic seems to care about something as anthropocentric as prettiness I wouldn't be shocked if there was, in fact, some intelligence behind the allocation of magic, and that the Thaumotologists had some hypothesis about its characteristics that matched reality, but I do not take their premises at face value."
...snort. "Fair enough. Far as I can tell based on Faith's occasional presentations on the subject they think God likes beauty because beauty is just inherently great, but that's not really helpful, is it?"
"I have aesthetic sensibilities, and they do not match magic's. 'Beauty is inherently good' is a reasonable opinion to have; 'this specific type of beauty is inherently superior to all other forms' impresses me less."
"Where are your disagreements with magic, do you need to be talking to Brooklyn about how to do pants?"