I don't see how T kept his body until she drove to SC as the smell would have been overwhelming.
Somehow I don’t think that would have bothered her one bit.
It seems kind of obvious to me that she either 1) passed him off to someone else at about 450 miles from COS or 2) left him there, at about 45o miles from COS. That would have been in the night of Tuesday-Wednesday.
Do we know when she left for SC? I have seen it said that it was right after the field interview on Friday the 31st, but I don't know where I read that, so I'll just propose she left then for the purpose of this theory.
By then I think her own car had been impounded, plus that of HH. And maybe the pickup too, for that matter.
So if she left COS after that interview, as the white van or mover truck was behind her parked during the interview, if she took off for SC then, and picked up his body at the 450 mile mark, then all she had to do was drive through to Pensacola, dump him and go to SC. He would have been abandoned (in a suitcase probably) -for about 3 full days in this proposed scenario.
Unless an accomplice already had gone to Florida.
Also she had that 3+ hours with the rental the morning of Tuesday to either move him 1.5 hours towards where she was going to go, or to sprinkle the evidence around to confuse the LE. We all discussed this earlier, he could have been in the back of the SUV at the airport.
Do we know what she did on Wednesday? Was that the shopping day?