She not, people can be smart because of interest or learning but could also be stupid when it comes to things like interactions or communication. For example a situation in which American spiders were causing a mess on Japan's beach setting off fire works, on their field they a competent as far as a we know but socially are destructive and immature towards other people's cultures and ways of life. You have thing sthat u could be insanely smart or competent with but if I ask u to explain astrophysics to me u may or may not be able too and it doesn't make u bipolar
I understand what bipolar is, I just used it as a descriptor for her shift in personality. One min she's describing the brother's ailment, understanding that ML has a "fiance", and asking for permission to explain her powers (smart) but then the next min she's getting drunk and dumb, kissing him, and other funny stuff before that. I just think it's hilarious lol

She's weirdly stupid and then abruptly intelligent, it throws me off so much lmao like girl you bipolar