Vulture flags the second half of this GQ piece on Rihanna in which Chris Brown makes an appearance at the same club. It's worth reading the scene for yourself. The reporter has the distinct sense that the appearance was planned and that both Brown and Rihanna are intentionally stoking the controversy.
I don't know that Rihanna owes anyone anything. I think what bothers me is the willingness to trivialize the behavior of men who like to put women in the hospital. Most of those women will not have the resources of a Rihanna.