There is absolutely NO way to know that for sure; that's the problem when you have sex with somebody after an incident you claim was rape.
For all we know, she wasn't bleeding after Kobe, and was after Mr. X.
And because they won't be able to prove which is the truth, this case is over.
Her blood is on his shirt.
If she did. I've always said I would not convict if she did because of the many questions and implications it obviously raises. As far as I can see, it is far from demonstrated she was with someone after Bryant.