Girls in two three places at the same time is not new, often there Sergej make a profile of a woman who can verify herself and then several girls work among this profile, which means B&S is to be expected.
Most girls, to be honest, work in addiction from their pimp or gangs . Everyone writes independently, but very few are. Also to be honest, you don't have to think too long about that, otherwise you would have to stop punting. One can only try to estimate whether the girl is working independently or not ...