How do you know that clearly, he is not responsible?
I'm going on a gut feeling of the father when he first realized that his daughter was missing. Was he wagging an alibi in the air, or was he a very scared man. I saw a scared man and even though parts of her credit card were found close to home, the police were not interested, and now police are looking in a forest far from home.
Is the question: is the father involved in his daughter's disappearance? My gut feeling is no. It's possible, given his checkered history, that this is related to people that know the father through his checkered history. It could be a random act against his daughter, who was a victim.