My friend is being stupid

Me and my friends made a group chat and we were texting and her sister was texting her being annoying and I said how about you pretend like your going to tell my other friend will block her and I’ll bet she’ll stop texting. And my friend got all mad and I left the group chat. She added me back yelled at me more then privately texted me and she don’t mess with me or my sisters and I’m done with your stupid temper. I’ll said ok fine we aren’t friends and I’m not the one who started it and I’m not The Who ended it. I left the chats with her in it and blocked her. We haven’t talked since Friday the day of the argument and I have school with her tomorrow. What do I do? I did absolutely nothing and I didn’t yell I just left not to start a argument. Tell me what do I do.