Our oldest daughter was 18 @ birth of youngest.
It was the best birth control she could ever take. She was fearful but in awe to witness it all
She was the only person in the world besides me to have been there
Birthing rooms are pretty posh these days....not the sterile nurse Ratchett joints they once where
As long as you and your wife felt comfortable with her there, I think it was a very good thing.