This girl laughs at me when i get hurt in cheerleading?

I just joined a new cheerleading team and everyone seemed to be nice until this one girl started picking on everything i did from my stunting skills to how i look. (I hadnt said a word to her). she kept making fun of my tumbling and it got to my head on one of my passes and i ended up falling in my tuck and hurting my knee real bad and that nasty girl started laughing as loud as she possibly could and her friend did too and everyone else was silent... Only the coaches asked if i was ok and made us condition because of how that be-otch acted towards me. What am i going to do? It seems like everyone is on the be-otches side and nobody said anything to me.... I was nothing but nice to her and hadnt barely said anything to her..