Something that comes to mind...with absolutely no insight as to who took her, it really comes to down to (if she was abducted - and sadly I believe she was) what kind of perp we are dealing with, and just how smart they are. Of course there are many kinds of criminals, but I feel that often we have two very broad categories, types: the kind who are cunning, smart, following the investigation and may have insight into law/LEO procedures etc., and the sort that is rather quite inept and gets, well....lucky. Not to say those who are not in the cunning BTK category wouldn’t follow the investigation closely as well, but they may not have, for lack of a better term, the deductive reasoning to think “hey, I should put this shirt somewhere that has already been searched” or near to a person that would be a reasonable patsy (in regards to the red shirt. If they have placed it, we can narrow this down more to someone more local...which I think is quite feasible. I haven’t been able to come to a conclusion on the sort we are dealing with due to the real lack of evidence we are aware of, but I’m very curious about what an FBI profiler would say at this point. And I think that could really play into what is/has/will be found...if anything.
ETA: deductive reasoning, not seductive. Autocorrect, you trollop.