Tw:fighting?

So as if you don't know (ofc) I'm a very sensitive person I grew up very rough and today I felt good about myself and I showed my drawing off and my "friend" said something abt it and everyone laughed so after that I talked crap about hers its nowhere compare to how good mine is right now so she yelled at me saying I was annoying and that I was gonna do nothing abt it I got stressed out and during break I cried and my brother saw and aswell as my other friends they asked her why she did that and said that Im on a rough point in life right now and they confronted her and she got mad and I said I didn't want to be her friend anymore and she got mad and said "okay then f that" so she got Infront of me and when I was confronting her more she grabbed my arms and I grabbed hers tightly to the point where she got bruises all my friends where crowding us telling me its not worth it of course I didn't fight her because I'm not a bad person? we all have different times we go through a lot after that I was stuck in the office having a very big panic attack to the point I couldnt speak or write