Here's my version...
Travis wanted out of his life for good. had no idea how receptive he would be of her when she showed up. 'He was happy to see me' was a bald faced lie. The friendly over-12 hours of togetherness- lying storyline is even more egregious and totally inconceivable to me. Once her presence was known, she had to kill him soon after. He might tell. Murder 101.
The ' single biggest concern on June 4th would have been- What if someone saw her near T's house on the way in, or on the way out. She had a backup plan. She would plant the sex photos in T's camera before Travis woke up. In case she was seen, she would simply admit she was there and lie they had sex.
-Some time while Travis was sleeping (doesn't matter when she did the transfer under this scenario) : She transfers the sex photos with altered dates to T's camera. It really is a simple process. No cables necessary. She does need her laptop with the pre-June 4th nudes saved on it. She will also need a card reader which Travis would already own as he was using the memory card for his camera. ex) A photo taken on March xx, 2008 1:44 pm would be changed to June 4, 2008 1:44 pm. And that's the date Det Melendez got later on. When I did the experiment, my computer let me change the date, but not the time.
-She snoops to her heart's content in the office. She could shoot him while he sleeps but she preferred to use the knife while he takes a morning shower.
-About 10 am Arizona time (~5 pm GMT camera time): Travis wakes up. Finds her in the office. Finds his camera nearby her.
He finds and deletes the sex photos, gets disgusted with her.
She starts sweet talk- I was just waiting for you to wake up, I stopped by to do x y and z.
He ignores her, begins to set up floor cleaner, says thanks for stopping by, tells her be gone by the time he finishes his shower. He goes up. Shaves.
She is mad. She sneaks in the bathroom and starts to take photos.
She kills him.
She begins to stage the scene.
Texts Chris, showers, deletes shower photos, puts on makeup, eats...
Sleeps in his bed, starts laundry- sheets and duvet first, then bloody clothes and towels next.
Uses T's computer.
Spends a loooooooooooong time admiring her work(she just couldn't leave the bathroom even though it was time for to go), says I beat you brat over and over.
Total time spent together including getting killed - less than an hour. No long gap time (interaction-wise).
Phew, I've rejected all evidences presented at trial and utterly rejected all of the ' testimony.
PS, I have the utmost respect for JM and his strategy used in this trial. I'm in awe of him.