Dunno, Max. It's rude, but then again it says more about her than it does about you. A good reaction might have been to ask her to please stop instead of to shut up. People are more ashamed at hurting people's feelings than they are about pissing people off.

I have to admit that I'm a little shocked that high school kids actually recognize stuff like that. I feel like it wasn't that long ago when I was in high school, but it seemed virtually unheard of.