Get what is called a Step Parent Adoption, and in that process have the natural father's rights terminated. You will have to show that he has abandoned his child both in terms of financial support and has not seen the child, and your new husband will need to take on all responsibilities of the natural father, including financial and emotional support, even in the event that you should divorce before she is an adult (child support and visitation).
Answered on Jul 08th, 2015 at 3:02 PM