For folks who think she wasn't killed in the Holder house, what details or motives are causing you to think that?
If he had walked somewhere with her, chances are better they would have been seen by witnesses or caught on the cameras. (I don't believe they cut through people's backyards.) We know his car didn't leave. So I can't figure out what scenario is being proposed. Accomplice shows up, they load a probably unwilling child into the accomplice's car, at much greater risk of discovery, drive to a second house/location, unload child from car (more risk of witnesses) then kill her there, then drop her body at another location? Meanwhile they've brought a bunch of stuff, including physical evidence from the home like dog hairs, to the kill site, and then brought all these supplies like red tape back? How does TH get home? In a car? Is that car on camera bringing him home?
I guess I'm failing to see the incentive versus far greater risk of exposure of taking her somewhere else. What makes people like that scenario better?
BBM: For starters, it is not so much that I think she wasn't but I thought earlier on that she might not have been, and I've not seen anything yet to convince me that it's not still a possibility.
All of the things like tarp, tape, toilet paper, etc. could have been brought by TH to another location -- either ahead of time, if this was a long-planned fantasy of his, or after he had Alanna stashed away somewhere, either bound or, who knows, just maybe by telling her "Wait here -- I'll be back with a surprise" -- horrid to think, I know, but we just don't know. If that tarp had been in his backyard, it easily could have been covered with dog hair, if their dogs shed anything like mine.
It's easy to assume that, because, as far as we know, Alanna was last seen in the neighbor's flowerbed, next door to TH's house, that he took her from there. But even that, we don't know for sure. They could have walked together somewhere, she could have headed somewhere else and he trailed her -- lots of possibilities. Yes, they likely would have been seen -- although possibly not! -- and we don't know for sure that something like this wasn't witnessed and just not released yet.
Also, if there was a vehicle other than TH's involved -- whether a 2nd person, or a vehicle he somehow, legitimately or not, had access to -- he could have transported her, alive, in that -- maybe after trailing her a bit, on the street.
The assault could have happened in a vehicle, in someone's yard, in a shed or garage he gained access to, in a vacant house -- probably some place closer to where Alanna was found.
All just theories -- not married to them, but just don't think it is certain yet that something other than him assaulting/killing her at his house can be ruled out.