BTW: If you haven't read my first post this may seem a bit random, so I advice you read it :)

So, I was minding my business outside with my friends. It had just stopped raining and there was still massive puddles on the ground. I overheard "Aaliyah" say to one of her friends saying that I'm a b-----, but I don't really pay any mind to it because I know she hates me . Me and my friends walk by her for no reason in particular. All of a sudden, "Aaliyah" comes over to us and slaps "Joyce" across the face and says "Look guys, this is the disgusting rat *insert my name* replaced me with!" People started laughing because they thought it was funny. Meanwhile, me and my friends and I see if "Joyce" is okay and I was SO mad, because "Joyce" has never done anything mad to "Aaliyah" before. So mad that I pushed "Aaliyah" as hard as I could muster at the time into a nearby puddle. "Aaliyah" starts screaming all kinds of cuss words and tells the teacher. I am now at risk for suspension even though "Aaliyah" slapped "Joyce" for no reason. So, AITA in this situation?