identity, dont be a simpleton, people have different strategies of coping with lifes circumstances, a girl going public on a rape charge against such a powerfull and rich celebrity, and exposing to her circle of friends the reality of her rape, is more than justified to joke about it as a means of coping, it's not that easy for a young girl to be confronted with her acquentenses knowledge that she was raped. Think about it.
It's all too human to make light of painfull events, and laugh about them to lessen their toll on you.