If he is not interested in being a part of her like nothing you do or say will change that sorry to say. I know how you feel about wanting her dad to be part of her life but often they are better without. I learned that the hard way with.my son's dad
If he is in, make sure its for the long term. It would be much worse for him to be in her life for a while and then leave, rather then not at all. Trust me...I know from experience.