This is a serious 问题 I Need your help

At my summer camp there's this girl whom I'm going to call M who is a total itch to me and my bestie, I. M 说 when we were in voice class waiting for Ms.Q, "Hey how about we all play would 你 rather?" And then she looks around the room, stops at us, and says "well, just me [K], and [J]"and she 说 that still scowling at us! And then later we were watching "Against the Odds" movie. Me and I are doing the camp news paper, and Mr.C told us to take notes on the movie. K, J, M, AND EVEN N were loud and obnoxious and annoying and they were supposed to be watching the movie too! Every time I tried to shush them and help them out they give me a nasty face. I even tried to ignore them but they were so loud with their iphones and giggling. So I told them off. THEY HAD THE NERVE TO SAY THAT I WAS BEING RUDE WITH MY "OUTBURST". WTF?! I don't wanna tell, because it isn't like physical contact, 或者 full on bullying. I'm trying not to care 或者 act like a baby about it, but I help being overly angry. (Part of it might be hormonal) 建议 please?