What should I do?

Disclaimer:I do not intend to trash talk, I'm only speaking my mind. 

I started attending highschool recently, and I've grown a good group of friends. A girl named V, A girl named A, and 2 longtime friends from my middle school. A and B got into a fight not too long ago and it was because V said "shut the f up.." to A and A took it very disrespectful so she yells at A, and I cannot blame her because the 2 aren't very close and A free up in a household where saying things like that in certain tones mean automatic disrespect. As I'm trying to say and explain to V, she just gets mad, tells me to shut up and then throws away her food and walks off... (The reason V told A to shut up was because A was supposedly being "loud" and V just randomly said "Stop people are looking at us.." and A replied "I don't care if people are looking at us! V later told us after everything that she had a headache and wasn't feeling good which is skeptical to me because why didn't she mention it before.) Then we try to reason with V but she won't budge so me and my longtime friends split up and debate the situation. I am obviously on A's side because V has done this to me too and I have even told her I do not like it, V continues to have an attitude with me and she continues to be really rude, even if she is joking, she knows I don't like joking like that and she continues. Throughout the day things get worse. My friend A threatens to jump V with her other friends and V is trying to explain her side to my longtime friend N, N talks to me about it in drama in a way I do not fully agree with but on done parts I agree. But the thing is, N, V and my other longtime friend AB had been trash talking my friend A while saying "she can't get over it..." Even though she has gotten over it. And my friend N mentioned how a mutual friend of her and A had mentioned that A wasn't in a good mood for the week, and N was ranting on about why A wouldn't tell us but her other friends... As they continue, I don't speak up because I think I'll make things worse. I can get why A didn't speak up about not being in a good mood because i love my friends but they all only listen to things they want to hear and me and A felt left out all the time. I would feel mostly left out too, and I still do. I've been thinking of switching to a charter school just to get away from this feeling but I also don't want abandon my friends all of a sudden. What really pisses me off is the fact they talked trash about her then tried to pretend they were all close again. N even told me on call "A needs to chill out, I get it was disrespectful but it's not that big of a deal to stop being friends with someone over, plus if A wants to sit with other people then that's fine with me but all she needs to know is that she isn't that close of a friend to me like V and it wouldn't be a big deal if we all did stop being Friends with her over this. I've tried to talk to them but I'm scared and half the time I'm either ignored or looked at weirdly A, and V are friends again but they're acting all close and stuff. I just don't feel comfortable and I'm feeling like a lost cause on the situation. Once again, these people are my friends and I do not intend to trash talk, I am just stating how the story started and how it ended, I am only speaking my mind on the situation and I need help on some split ends.