Is it possible for me to adopt my step daughter? The situation is that her father is on the birth certificate but does not play a role in her life. My wife has full legal custody and a protective order agonist the father preventing him of knowing where we live. He pays no child support or has no communication with her. She is 4 years of age and I've been taking care of her since she was 1. Is there any thing I can do? Thank You!