If she showed up as an intoxicated skank, she probably didn't get paid either, which would be further motivation.
If she showed up high AND beaten up, I would give a good probability to her having traded "favors" for drugs, gotten into a fight with the dealer after partaking of the drugs, and then gone to her assignment
Where does the boyfriend fit in all of this? He's the one that supposedly took her to the hospital.
More probably her pim...er, agent did that to her.
Here's my theory - she showed drunk and beat up looking. Maybe something crude or racist was said to her, but they basically told her to go away. They wanted a decent looking stripper and got a drunken slob. If anyone apologized, she did, so she could earn some money. They felt sorry for her and let her in. Once in, she acted drunk and stupid and couldn't perform a decent stripping routine and the guys wouldn't pay her and told her to get the hell out of there. She left and ended up at the convenience store. The cops found her, and she made up a drunken lie. Just a theory though.