She's...not really in the know. But Aly says she's been seeing ghosts so she's going to try to explain it. I don't so much want people living with me who don't know, just because when they eventually find out, I really dislike hearing, "I'VE BEEN LIVING WITH A DEMON OMG OMG OMG *FLAIL*" as if I'm some sort of plague or something even though up until then they enjoyed the free food and roof and had no problem with me at all. /bitter.
Anyway, Isabella is wonderful and friendly and really fun. I think she'd fit in well.