I hope that your daughter feels better soon. I don't blame you, I wouldn't leave the room either. He needs to suck it up, act like a father and learn to co-parent the proper way. You certainly aren't going to throttle him in the hospital room and he needs to understand that you are her mother and you will be there for her.
As for the 29 yr old.....who does she think she's fooling? No one. Everyone can see what's going on there.
Please take care of yourself and speedy recovery wishes are coming across the pond to your daughter.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.