Don't want my mom at the delivery

I am not close with my mom. We never have been. It is really hard for me to be around her more than a day. She is immature, timid and people pleasing, I am more outgoing and independent. Every time we have a life event (wedding, moving, etc) I have to manage her and set boundaries over and over because she doesn't respect what I am asking for.
She asked about coming down for the delivery in Feb and I told her I'd let her know when I was feeling up for visitors when we got home from the hosp. She was shocked I didn't want her at the delivery. She makes me stressed out having to manage her behavior and having to deal with that during labor would probably put me over the edge. 
Am I alone in not wanting her there? Does that seem too critical? I can't muster up feelings for a relationship that doesnt exist just because I'm having another life event.