Hate my sister in law

Yesterday, me my brother and his fiancé got in a pretty big fight and she was completely rude to me. She started screaming at me and my mom and was just plain rude. Calling us names and being so disrespectful. My brother kind of just sat there and didn't say much. Me and my fiancé are expecting a baby in December and we are getting married in June. After all this happened, it makes me really not want to invite them to anything that has to do with me anymore including my wedding or with my future child. I am normally a very forgiving person but she has caused so many problems lately and I have had it. Is it wrong to tell my brother that they are no longer welcome in my life?