I am of the belief that RDI. However, as I sit here right now I am trying to be openminded and just think about LOGIC... while all of these far fetched ideas roll around, and perhaps one of them is right, I tend to lean a bit more to the logical side of things. Unless a RDI, the only logical thing I can come up with is some sicko meant to kidnap her after silencing her. He then got a bit excited, brought her downstairs. Began sexually abusing her, torturing her through the garotee. Sometime, whether it was when he was bringing her downstairs or when he was down there he banged her head hard. Perhaps he dropped her on the cement. Perhaps he banged her head on a doorway. Its hard for me to believe though that such a bad injury would be caused by an accidental bang. Also there are just so many other things that I just can't fit into the IDi theory.