The end of a friendship?

I had to end a friendship a few weeks ago (now that I think about it it was probably a month ago) and now I'm not sure if I had made the right decision.

She got angry at me because she thought I was bossy during an overnight school trip. Then she ignored me, and when I tried talking to her she told me to think about what I had done like a mother scolding a child and to not act like the victim when I was trying to stay calm. then she alienated me from all of our friends and made me feel extremely uncomfortable when I was around her and our friends.

Seems to make sense right?

Well here's the thing, I was talking to one of our friends and she told me that we were blowing things way out of proportion. Now this friend usually takes sides in these situations so I was surprised by her objectivism. So now I'm not sure whether or not to talk to my ex friend or just leave the situation alone.

If I do leave things alone I will be completely alone my senior year in high school. I guess what I'm asking for is advice on whether or not I made the right decision in the first place. Thank you for reading my rant!