What bothers me about this scenario is these girls were not tied up and forced. They wanted the stuff, the trips, hanging out in a fancy place, etcetera. After something objectionable happened once, they had the option to sever the relationship. But they didn't do that, did they?
I'm not making excuses for the behavior of the adults involved. Just that these girls could have ended the abuse, but they didn't. They kept coming back for more.