Help, I need some advice about the birth of our baby!

I’m 38 weeks with my first baby (a girl) due basically any day now. My husband and I planned to not have any other family members in the delivery room for the birth. I’m close with my mom and I guess she expected to be included at the birth. She is the sweetest person ever, but can be overly emotional and dramatic at times. I really wanted the experience to be as calm as possible and to avoid frustrations that come with many visitors being there “to help”. When I tried to explain it to my mom, she was extremely hurt and still wanted to sit in the waiting room for the whole labor (even if it’s 20-30+ hours). I just don’t want an audience of people waiting and want some time after our daughter is born to bond without visitors. Is it unreasonable to not call her until the baby is almost born and to request no other non-immediate family members/friends visit while we are at the hospital? Should we just not announce the birth at all until we get back from the hospital?