@A. G. Peak Watch how it turns out she never left the island.
Some random person alleging they recall seeing this very generic looking woman (fat white woman with frizzy hair) on the 19th 4 months earlier is about as legit as the people who claim they saw Madeleine McCann in Brazil etc.
Never happened. Because you'd think the outfit description would confirm it but JF only gave her outfit retroactively after being told of this sighting. As he says, they described the sighting to him and THEN he was like "oh! Yes! That was what she was wearing I remember now!"
That locale is also nowhere near the "wilderness" she was apparently fleeing to with a bag full of camping gear, and would be legitimately around various security cameras etc, that looks like a major city center. It just didn't happen.
She was taken to the garage where there were cameras to form an alibi. I am guessing she was then picked up again nearby away from cameras. She was taken home and there she was murdered (because there's no other reason to replaster walls etc unless something happened in that house). He also won't let the RMCP in his house. He alleges its because of security concerns since he's an internet figure.
Her body parts were put in the fridge. I say this because its mention is weird and sounds like it might be stated as an excuse later for having totally sanitized the fridge or w.e. the hell he has done. He must have taken her phone at some stage. He will have turned it off until he was ready to take it away somewhere to send himself a final text message saying "I'm ditching my phone goodbye" at which point the phone was turned off and destroyed.
He used his special digital alibi secret (the one he carefully explained Kohberger should have used) to establish an electronic trace of life away from himself. Perhaps some sort of autoresponder or program to pick up calls to make it appear they had a phone conversation far apart.
Now Occam's Razor is he didn't take her back home. But so much of the incriminating stuff he's said relates to the house, as well as his actions regarding the house (refusing entry to the RCMP). I am not happy with this theory yet.