If Larry has already done some DNA testing and has found out he is NOT the bio father of Dannielynn, then OF COURSE he would do some dealing with the DEVIL! He has so much time and energy invested in this battle so far. Plus he has already purchased furniture and all that stuff. He has believed he is the father all along.... so what would happen if he isn't the real father? It would be so hard to change his mindset!! What a shock, devastating for him! Do you really think he could easily walk away from this? NO WAY. With her lifestyle, Anna herself, might not have really known who the father was. What a shock if it isn't Larry!