Just seems as if another friend is trying to refute the victim's desire to be there, even to the point of implying it was her idea.
Very difficult and tricky terrain Op. I understand and agree that people put themselves in positions of danger and when something happens are surprised. I also understand that you said that consent is necessary, but when it is implied that one wanted to go there and then "backs out at the last minute", there is a clear implication that it is the victims fault in some way or that she did it on purpose to get a payday.
In all likelihood, nobody will ever know.
As a father of three daughters, I try to tell them all the time about not putting themselves in these kinds of circumstances, but that is much easier said than done.