I also transcribed that interview back on page 14 and listening to him that closely, while transcribing, really makes you realize what a smooth talker he is. He says words that don't really answer questions and then starts talking about what he really wants to say, which is what a great guy he is. I can just hear him talking to all his baby-mama's exactly like this, smoothing things out without saying anything at all.
On another note, I agree with the people who think mom should be talking more. She is upset and she has made a public plea or two, but she also said that she hadn't talked to DL, yet there is a photo of them talking, and he says "they" called the police together. I don't think she has anything to do with Bianca's disappearance, but I do think she feels guilty because she was letting Bianca stay with him for so long. I don't know why a mother who's barely two-year-old child didn't know that father at all would allow the two-year old to move in for such an extended period of time, a month. Obviously, she has a reason to regret that decision.