Debbie Moon at 2013-04-15 16:22:29:
If you wanted to come at this a different way, maybe the daughter blackmails her own parents? "Sure, I'll come home, but you have to give me money - and drugs - and let me live how I want, or I'll tell the police you killed my pimp?"
So the daughter's running wild round their nice little home town, sleeping around and getting arrested while drunk, while they have to drive to the city and buy her drugs etc...
How would this resolve itself? Would they get desperate enough to turn on their own daughter...?