I don't think she is doomed. She just needs to stand up and say "Hey, mom I'm not inviting you because you make any family/friend event your stage and you don't care to have your event ruined. Mom needs a reality check and she needs to grow up. She then will have the option of coming and being an adult or staying home. It should be her option. If she shows up and starts her crap, show her the door. You warned her beforehand. Like I said before, stop enabling this woman.