Again, this could be wishful thinking but...AD's Arrest Warrant includes "Intent" in the charges. When AD was arrested, the police had MAM in custody, AD interviews, video coming and going, and interviews with other players such as Cole. They may have found things in the house (besides poop) that leads them to a sexual crime. If not, either the video of them leaving is revealing or they are relying on someone's account (MAM). Of course, he's going to posture himself as a delivery man doing as he's told. The autopsy evidence hopefully gives them enough to paint the story.
Someone was on earlier spent the day in Fayetteville. She was chatting with the locals and the gossip there is that charges will be reduced for AD. Doesn't mean anything really but interesting.
Usually I love being a detective pulling together theories, but sexual crimes against children are too horrible for me to think about. I want her to be given a drug and she died peacefully.