Okay so! Marcelle will absolutely get along with her because they have much in common (also, hi!). And she'll flirt with Isabel as well, because of course she will.
noellelaurent might be into Divination, and she could be a friend for Isabel?
veroniquemartin has a girlfriend but will have some acting out when she discovered said girlfriend is cheating, so either one might be a (willing) victim of that?