I'm sure that I saw on the news earlier in the week a bunch of coppers with a dog go into the house, but it that was just for the dog to get a scent from somewhere that Tia had been it's understandable that it didn't locate her body, which may not have been there at the time, who knows. Surely, in the case of missing children, the MO has to be a comprehensive search of the last building that the child was known to be in before widening the search. With all the Police, media, and local interest centring on that house would it have been possible for the perp to have gone out and brought the body back unnoticed?
I guess it'll all come out in the wash... :-?