I have a mom who doesn't listen too
- so maybe if you really don't want her there you will have to let the hospital staff & doctor know - they can handle her, you are going to be a little busy doing other things. Talk with your doctor about it.
That said, I would never had imagined my scenario. -- When I went into labor, it was all back labor - none of those contractions across the belly they teach you about. I was dying - they put me in a shower chair & ran water on me forever. My parents came in while I was in labor in the bed and my dad started rubbing my back for me, when the doctor said were going to have a baby soon do you want your parents to leave? At that point, I was beyond caring who was there! - my dad was rubbing my back, while my husband was helping me concentrate on breathing in front of me & well my mom, my mom was just grinning ear to ear. So both my parents were there, it was a moment I know they will never forget.
When my brother & I were born they didn't let men in the delivery room, so it was pretty special for my dad to be there. He ended up taking pictures, as he was the best camera person there besides myself
I know my mom would have loved to have been in the room with my brother & sil when their 2 were born - but it didn't happen, don't think she asked
(if it had been me again, she would have!)