Woman asking dad question

Mountaineers

A male friend of mine and his girlfriend are expecting their baby girl in 2 months and all of the sudden she comes home and tells him she wants to move in with her mom. Who lives about 40 minutes from him. She says she still wants to be with him and he can come and stay whenever he wants. As if he's supposed to be okay with that. Her mother is controlling and he said she came home after spending a day with her mom and had all these financial fears and terrified that she couldn't be a mom. I get those fears I have two children but my husband is my support not my mother. Anyway he's afraid of the what if's. What if she comes home but changes her mind again? He needs to cover his ass I think. Does anyone know the laws in this situation? What if they try to keep him out of the delivery room? What if they dont let him sign the birth certificate? I dont even know if thats in someone elses power to do that. If he's not on the certificate does he somehow wave his rights as a parent?