I don't think she was wrong. She was standing up for a friend. I think she was really polite about it too. It's not like she 说 'Hey your a stinky poo face and Beck got the lines right so BACK OFF'. She just calmly informed her of a mishap and the crazy chick went bat crap crazy on her.
Unfortunatly it's Hollywood though, and they have to make sure the 星, 星级 of the 显示 is happy. I'm sure there are real people out there that act almost as awful as that.