That is DISGUSTING.
No offense, but your friend is being just plain stupid to stay with this guy. I'm not saying that she's a stupid person, but its a very stupid decision on her part. Your God Daughter may not be showing signs of pain now, and i pray that she never will, but it is possible that she just doesn't understand right now...but it will take an affect on her when she gets older. She misses "Daddy" because he was the acting father-figure in her life. Even kids who are abused mercilessly by their parents still love them because they're their parents.
I'll keep her in my prayers. This is a disgusting situation and I can't understand for the life of me why your friend would want to stay with this monster.