Three primary people: P, C, N, and me (I'm a guy btw)

My (used to be) group was chatting with each other in a voice channel on discord and for almost the whole time one of my friends (she is P) was doing makeup. Left a little earlier than everyone else and when I came back the call ended and everyone transitioned to the group chat on Instagram. 

We kept talking and later P posted a picture of herself done putting on makeup. No one reacted and that's when she said that she felt like she was getting attacked because no one said anything. At that point I started my comment (I talk in multiple small texts and not one big one sometimes) and in the middle of it, I rethought if I should say it and stopped. At that point everyone already saw it and 2 people encouraged me to continue (including P) and C told me to shut up, which I wanted to do. 

They kept telling me to speak my mind until the person that said to shut up gave up (it went from 2 against 2 to 1 against 2). At that point I said that she was acting like a attention seeker (I did not call her a attention whore at that moment) or as many other people have said in the past (she has many enemies she did not ask for) an attention whore. At that point she started to use sarcasm (you can't really use sarcasm over a text bubble but in this case it was obvious) and how it was great to be called an attention whore again. I felt extremely bad for doing this and wanted to look to someone else I trusted for help. I talked to N.

After talking about this to said person, N decided to confront P. N used the screenshots that I sent her to help her understand the situation and in the group chat, P said that there was a Snitch. I told N about this and asked that she doesn't mention me (I told her this before also). Sooner or later I get found out. I get asked to leave the chat, and I did without an argument.

 At this point I feel even more guilty and afraid something could possibly happen to me tomorrow at school (she is decently high on the popularity ladder) from the fact that I've heard rumors that P has ordered people to jump others but didn't want to believe them. I might ask a different subreddit what I should do. But here I'm asking, AITA?