I realize that this might be way out there........but................could it be possible that Mackenzie's death was purely accidental...............but her injuries came about as a result of somebody trying to transport her somewhere to dispose of her remains.......on a dirt bike....but he..........lost her? I mean, he wasn't able to hold onto her (it would be extremely difficult!) and her body sustained the trauma due to falling off the dirt bike and possibly hitting a railing or something on the side of the road? CB was the nearest place for him to "stash" her until he could find another way. Perhaps, draping her over the seat while he walked the bike down there in the middle of the night? It would explain some things, maybe. Not sure if it would explain all of her (rumored) injuries. Maybe it was just something that went badly.......a terrible miscalculation or accident, and the rest is an attempted cover up gone bad. Just some thoughts.