MIL drama about labor

So my mother in law kinda insisted saying "since i was in the room for all my grandsons, i'm being in the room for this one". Well i'm the first one out of the family that is engaged to her son, so she was for all her daughters. My boyfriends close with his family and he reapects my decision. He said it's up to me, as long as i'm comfortable. Well i told him no. But i have a gut feeling when he texts her that when i go into labor that i'm going to be only in the beginning dilated and she's going to barge in the room and not leave. Then she's going to start drama when i'm ready to push and i want her to leave. I want my mom, my boyfriend and my godmother ( which is my best friend since 3rd grade ). I don't really know how to make it clear to her without the whole family giving me shit and being disrespectful for my decision.