So let me get this right what you're saying here...I don't agree with your view point one bit in this case, personally I think it was a joke that he was convicted but think its more of a joke to have a go at a woman who did nothing but tell police / CPS /Court exactly what she remembered happening on the night (i.e. not a lot).
Once the CPS decide to prosecute the victim no longer has any power in said case?
And she did do something, she took the stand in a case in which a man was accused of raping her, in which she admitted she had no idea if he had.
That, I'm afraid, is culpability.