Kasie is what you call a sadist. Yes, she has never bullied anyone, but once she saw you, she had a feeling that would change

Se had caught feelings for you, but of course, she doesn't know how to express them properly. So, she takes pleasure in bullying you. Literally

She throws you against the locker, and as you slide down, she pulls you back up by the hair, smirking with her piercing stare

"Wanna know how pathetic you look right now?"