Ask if she's okay, and if she says no, tell her that if there's ever a problem, she can talk to you
Quoting an old post but yeah, do that. Remember that you might take some stuff for it, but if you want to do something that's it. Unless you're a total badass that can kick the asses of the people who are loving with her so hard they never look you or her in the eye again. Otherwise, do what Ike said.