My big problem with saying that Debbie did it is there is no reasonable explanation. Lets say it was an accident. What mother would not immediately get help for the child? Only a mother who had little or no sense of responsibility, and all indications are that Debbie was a good, caring mother. So, lets say Jeremy killed Lisa. Again, what kind of person would not immediately turn him in? Lets say one of the boys accidentally killed Lisa. Again, what reasonable person would not call the authorities? If it was an accident then there would be no charges against the child. These people obviously trust LE, based on how far they allowed the police to push them with no lawyer, so why wouldn't they trust LE in an accident? Maybe it was abuse? But most abusers are already on the radar. She has two other children, and no history with CPS. None of her neighbors will say anything bad about her - and THAT'S pretty surprising. There are always people who will say bad things when the camera is rolling.
Logistically it just doesn't seem possible. She would have had to kill Lisa, get rid of the body, and clean up all forensic evidence (which is darned near impossible anyway) in 5 hours time, in a house with 2 other children. Where did she take this child? And how? She had no car. Who would help her? Who would you even ASK to help you with that?
I am not saying that it is impossible for her to have done it, but so far, all of the speculation against her is explainable without needing outlandish explanations. Even the quantity of "evidence" that has come down around her can all be explained. And, most importantly, it all hinges on what she told LE. It makes no difference what she told the media in interviews, or what they have pieced together. Until we have confirmation from LE that Debbie lied to THEM, I give her the benefit of the doubt.