Maybe try and see things from your friend's point of view. It's possible she is scared that because you friends with these other people she is going to lose you and unfortunately expressing that fear by being rude, disguising fear and weakness with anger. I've found that compassion is often the best weapon against rudeness, thinking about what must be going on in that person's mind to make them behave that way. It takes effort, and by no means am I perfect at it, I've flown off the handle at people being 'rude' plenty of times, but I think in order to be the bigger person, it's important to show calm, and most importantly compassion. *essay over*