I've had this open forever and I just never finished it because I am terrible, but yes. FINISHING. SORRY. Also, hi! I'm Jackie and I've got two ladies at the moment.
Mo over here runs maintenance for the school and spends a good deal of her time ripping things apart, putting things back together, or telling pretty people that she finds them pretty. She shares in Charlie's problem with friendship often = intimacy. But, hey! She's made lots of friends that way! So ... it works. It's terrible life advice to give to others, but it works! She'd also want to ruffle all of Jonathan's hair and check out boy-things with him and give him a ridiculous nickname. Like muffin. Or something equally horrifying. (I generally just try to apologize for her in advance and leave it at that.)
And Mariette (gezellige) is my little weirdo Spirit major. She's absentminded and strange, but incredibly difficult to offend, so Finn wouldn't have to worry too much about saying the wrong thing around her. And her grandfather was a Lit professor, so she pretty much showed up on the Island with suitcase full of books and half a sweater. She's good with book snobbery.