i like the idea of them being from different social circles. maybe they started out as close friends, but sometime in middle school they ended up with a different group of friends and it remained that way? then in high school it took a turn and they ended up together, despite their friends not really being friends. she grew up in a strict household, so she didn't have a lot of freedom. because of that she developed a penchant for challenging authority and breaking whatever rules she could get away with, without getting caught. not at all a delinquent, but typical teenage things like underage drinking, sneaking out of the house, trespassing with 100 other kids throwing a party in abandoned places, etc. would things have ended when high school did?