Well of course it's all speculation because no one can get close to Arias' thinking seeing it doesn't act remotely normal but................here are a few theories as to why she might've transposed those photos onto his camera:
1) To do exactly what was accomplished (placing her there as an invited guess) then perhaps someone else (Matt?) was supposed to kill him in a burglary/robbery while she was there? But something obviously went wrong (Matt couldn't make it?) and that plan fell through and she changed her mind.
2) Perhaps she really WAS going to give Travis one more opportunity and when he rejected her.....she was going to make like she was there (put photos on his camera) and set his house on fire (15 gallons of gas) in the garage? Then changed her mind.
3) To frame him with his Bishop? Then, changed her mind.
4) Perhaps Travis himself put it on his camera at an earlier time (April?) and the time-stamps were when they were actually deleted not, taken.
No one has ever explained why some photos contained time/date and others didn't. I don't think the State actually believes the scenario they're putting out there but because the ending was the same, it doesn't really matter.
I do believe there was a LOT of truth in those interrogation tapes. I do believe the Intruders either were factual or they were a plan that didn't transpire for some reason (or Flores himself gave her that idea. I don't know. But Flores even said that to her mother so......)
As much as I am passionate about not believing Travis had sex with her that day and invited her in, I am equally as passionate that Matt and Gus Searcy were MUCH more involved than we know/think. And Darryl was the knowing recipient of stolen merchandise (DVD/remote) and that's why HE'S being loyal to her.
I hope this jury does the right thing!!! Pray!
ETA- Arias knows/knew a lot more about digital cameras than we're giving her credit for. After all, those encrypted messages from her jail cell were in photography magazines. There are ways to manipulate time and date.
Also, what was said in that blog was, that memory card didn't fit Travis' camera. So it might've been Arias'? Here's another thing that sort of ties this in. A lot of attention was given to his 'office' and his computer.
Perhaps she had these photos on a memory stick and was trying to upload to his computer (to email to Mimi?) and his computer didn't cooperate for whatever reason.
His camera was in that room. The screen that was found on the lawn, was to his office window.
She also made sure Flores got the impression she had sex with Travis in that room. Why? Perhaps she wanted to explain why here DNA was recently in there?
I mean......I can go on and on and because I will never believe he had willing sex with her that day, the theories are endless to me.
I wish I could find a photo of her fingers/nails from that day because I also don't believe she had her nails done. Who does that when you are 'broke'? This story the State unfolds doesn't sit well with me. But we all know she killed him and that's the only thing that matters!