Can I be honest? I was a bit taken aback by what your parents said also. But I'm not there, I don't have a clue about the situation and yes, it's likely that she is enjoying taking shots.
But for her to make moral judgments right now is pretty funny. Perhaps you should go get her a mirror? What would I do? Ignore her. It's not her concern what your parents do. And I especially wouldn't be worried about her judgments at the moment. It really isn't worth a response because all it would do is get you in an argument. Our job is to diffuse the situation not elevate it. So that's what you'll need to do right now.
