totally up to you but a roommate would make an easy pester-target! i imagine he's not the best roommate - he is late on rent a lot, hates doing dishes. constantly has a million things going on but there's always time to be lazy and do absolutely nothing. comes in really late after gigs, uses the garage for practice. i'm imagining their landlord is pretty chill and doesn't really care about the property, so as long as they don't do any serious structural damage, they don't really care what's going on there. if that doesn't work for what you imagined her living situation is, then i'm happy to say they met some other way and she's become a friend who may or may not regret it!