The fact that she doesnt support a prosecution does not automatically mean that they case is dropped, but it obviously makes it more difficult to do so. None of us know what the victim would now say in her evidence, but I'm guessing it undermines the case significantly.
I also think it's worth remembering a few facts around this and similar cases; there doesn't need to be any 'evidence' for him to be interviewed by the police, only a reasonable suspicion he's committed the offence, but at the point he is prosecuted there needs to be a realistic chance of conviction based on the evidence. That latter position most likely has now changed.
We all get the fact that he has effectively had his career paused and most likely irreparably damaged, but in this case I think most people would feel he's culpable, to some degree?