I think your strong views of her are pretty harsh based on your assumption she's lying.
If she is, then I completely agree she needs to be exposed to us as he has been, but at the moment you do not know the circumstances. The girl was in her early 20's when it happened, if it did, that is.
I should imagine that grassing up a very well known and loved (at the time) TV personality would have been a daunting task and her anonyminity may not have been assured, just to add to the stress.
I don't think his name should be mentioned by the media either until charges, if any, are brought upon him.