ITA. I think Caylee died in Casey's bed. From the clothing that was with the remains (or missing, in the case of shoes), Caylee was in her bed-time clothes at the TOD. The next morning, I don't think George saw Caylee... or if he did, she was already dead and Casey played it off as if Caylee were 'asleep", maybe having her wrapped in a blanket. I think that is why George is getting so mixed up on the details of what happened that day (or he is straight up lying). I also think Cindy's statement that she heard Casey and Caylee "breathing" thru the wall is rather odd. One of the first things I (and maybe others) associate w/ being alive is "breathing"... so maybe Cindy was covering up for the fact she already knew something was very wrong, or maybe she even knew Caylee already dead. Her choice of words there "heard them breathing", just strikes me as very strange.
Edit: I wanted to add something else. I know the video of Kathy Belich's interview with Maya is pretty old, but I just watched it a few days ago. Now, of course, people can choose to believe or not believe Maya, but I personally found her extremely credible. She made the statement that when Casey would "knock Caylee out", she would do it at her home, leave home with Caylee sleeping and go out to party. That would be quite risky being as that George & Cindy were in the home, but we know Casey isn't the sharpest tool in the shed, and engaged in other st00pid behaviours where she would easily get caught (using Amy's checks, for instance). Perhaps Cindy & George even suspected Casey was doing this.
Ya know, I suspect that things in this case would make a whole lot more sense if George and Cindy (AT LEAST) would be honest. Unfortunately, we're probably never going to know the truth about what happened to precious little Caylee.