So there's this girl at my gym who screams, grunts and swears really loud every time she rolls with someone. I've only rolled with her a couple of times. First time I thought I injured her and asked her if she was okay, but she said she was fine. She still grunted and yelped a bunch of times. Tonight I rolled with her for the second time. After failing a sweep attempt she yelled "FUCK!" at the top of her lungs. After a while I proceeded to pass her guard and I'm pretty sure she called me "fucking fatso". I found it quite confusing since I don't think I've ever been called fat in my entire life. I'm currently 165 lbs, 5'11'' tall and athletically built. I ignored her for the roll, but it was pretty annoying. I think I went pretty easy on her. I don't think anyone has said anything to her about it since they don't want to be rude. Have you ever encountered this sort of strange behavior and what do you make of it?