Catfight!!!
I thought the one girl was charged with assault rather than "having sex" because of the fact that she struck another woman patron in the face after she got into an argument with her over the girls taking so long in the bathroom. Hard to imagine the police could charge them with "having sex" since they were not there to see it and any witnesses would most likely have been intoxicated at the time. DA's usually don't care to put people on the stand if they were bombed at the time they "witnessed" something.
That being said I would have liked to witness such tender emotions between two young beautiful women while I imbibed my favorite frosty beverage. Oh wait a minute, thats why I go to Montreal!