Aww. I am sorry to hear about your unfortunate situation. Now, saying "if you say one more thing about my sisters and my sorority that she was not gonna like what will happened" isn't very A-Phi like, I can understand your anger.
Different groups are different and becoming angry over a term is just silly. Everyone was there to have a good time. Glad she walked away because I know that she definitely wouldn't have liked what would have followed.
