As soon as I read the report I knew they probably wouldn't charge them - unless there is some other evidence there was no way they were getting a conviction. Her friend's version of the events (she wasn't that drunk, they didn't force her, I told her she should leave but she wouldn't...) and her behavior combined with her own story (got in the cab with them, apparently without being forced to do so, after the assault in the bathroom when her own friend spent 20 minutes trying to convince her not to - she said several times that they didn't physically force her to do anything or go anywhere) made it impossible.
Before you attack me, I am just speaking from the standpoint of getting a conviction - convincing 12 people beyond a reasonable doubt, etc. I have no doubt she was assaulted and she didn't want it to happen. She was drunk, not thinking that clearly (by her own admission) and probably didn't want to create a major scene (conjecture)... My advice to any female is that, as soon as something starts happening that you don't want to happen, and you feel you have made it clear that you don't want it to happen - go into berzerker mode - claw, scratch, scream, whatever. That is the only way to make certain there is no mistake.
What is a juror going to be thinking when they hear this story? If the first bathroom incident was unwelcome, why did she go back in the bathroom with them (she said they didn't physically force her to go). If the two bathroom incidents were unwelcome, why did she get in the cab with them when alternate transportation was available and was being urged on her by her friend? After the incident in the bedroom at the apartment - why did she sleep next to one of the attackers and then 'mess around' with him the next morning. She would presumably be sober by morning...
I have no doubt the night was a nightmare for the girl, but, this case would be definitely be a nightmare for a prosecutor.