I went to camp for that long. Be confident and friendly. Smile a lot and offer to help people- don't be shy. Compliment people and soon you'll have loads of friends :) Good luck and have fun! Camp is a blast!
Most of those questions come from anger. The people asking them really do love their parents. They're just angry, so they only mention the negative things about their parents.
But the basis of their attitudes towards things are often results of how they were raised. Some were just handed...
Take it as a compliment : ) Even if you don't like the girl, don't be too hard on her. One day you'll be standing in her shoes probably. Chances are, she won't do it again- so just let it go I guess.