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.
Kisses are great. They can just make out in this dollar store, nobody stops them.
Dollar stores are not the most aesthetic kissing location ever but Katarzyna is so not complaining.
"Mmmrrrgh I have to start flying back if I don't want them to decide to officially notice I'm off school grounds without permission."
She takes out her notepad, writes her number on a clean page, tears it out, and hands it to Isabella.
Katarzyna flies back to school, cursing their stupid curfew enforcement policies in her head for a few minutes before the joy of flight and of the preceeding few hours comes back in a rush.
She lands and goes inside, earthbound now but still floating, getting a few odd looks from those who know enough about her to realize that it's odd for her to be so thoroughly blissed-out, and wends her way back to her room and flings herself onto her bed to scream her delight into a pillow.
"I met Isabella! Isabella asked me out! We went on a date! We kissed! We had stimulating conversation! We did magic testing! Isabella is the beeeeeest~"
"I love you too."
Okay, where's her laptop, there's her laptop, time to do research on Coast Paladin teams and powers thereof.