IMO CB is opportunistic, sadistic and indiscriminate.
I think CB had an inside informant. MM's parents, both doctors. As yet specified employee notes "Dr and Dr", alerts CB that 5A is hot, as in wealthy tourists. Might even alert him to the rotation of bed checks on the half hour. IMO this LIGHTS CB UP. An unattended little.
Maybe the informant stood guard near the open window, but regardless, and with no regard for human decency of any kind, CB forewent the traditional spoils of burglary and took what was most valuable to the wealthy doctors and most valuable to a demented sadist.
IMO part of CB's psychopathy is fearlessness. Abducting a child, walking away with her -- no fear. I think the 17 year old basically alibied CB due to his fearlessness. He wasn't MIA long enough, it might have seemed, and he didn't behave like one might imagine he'd behave had he done it. But I think he did do it and showed no signs because he's fearless. Fearless, shameless...
I fear he kept MM for several days. I'm reminded of a horrid episode of Forensic Files. Twisted perpetrator abducts a young girl. Stashes her in a pine box in his work truck. Parks at home, goes out for dinner with his wife and kids....
I see that level of detachment and perversion and fearlessness in CB. IMO he gets off on creating fear. For his victims. Their terror, his thrill.
Possibly LE's digs correspond to CB's fire rings, as identified in photos. IMO it's not impossible that he nursed a fire for days... his dirty little secret -- crematorium in paradise...May have achieved greater heat with accelerants.... pulverizing...
Every time I see a picture of MM, I am haunted by her innocence....
Jmo