Your exh is in a tough situation with his other daughters events. For me personally, I think the bigger thing to do is try and adjust the schedule for him to see baby but something within reason. I don't think you should punish his other daughter who is innocent in this or baby for that matter.
I know it is not an easy situation. Try and detach emotionally from what you think about him and instead try and think about the kids.
Just my 2 cents.
Kevin
Me 36, W 37 M: 08/02/97 D13, D9 1st Bomb 02/08 Reconciled 04/08 2nd Bomb: 09/08 W filed for D 02/04/09 Separated 03/09 D dismissed 06/09/09 Still separated...