Im not friends with someone anymore

My old friend and I got in a fight in a group chat because she accused me for not caring about her and making her feel unwanted. My other friends and I agreed that she was being selfish. She had also peer pressured us, which we realized now. she then insulted me, my family, and everything I love. I got really mad at her and called her names and threatened to hurt her if she ever came near me again. I don't know if its right to think this, but My day would be so much better if I punched her face. she's kinda short and stubby, so if we were to fight I don't think it would be fair. Sorry, I just had to get this out of my system