The letting down of his guard, JM said (and I agree) was temporary. The texts speak for themselves. He thought she was gone and he could breath, and he didn't like enemies if he could have them be friends instead. Maybe even then he was also worried about making her angry enough that she'd run to the bishop. Dunno. But he DID break with her by May 16-18, and after that there was no apologizing and forgiving and going back to the same old. May 26 put a great big ole exclamation point on that break, but it had already happened.
The



obviously considered that one hour call early on June 2 extremely important to make. We seem to agree that she didn't call to tell him she was heading out his way. I don't think he would have spoken to her about roommates, etc., because IMO he hadn't turned the page with her and wasn't going to.
My best guess is that she told him --great news! I found the Helio, I erased the tape, and yah, I found my One and so have as much to lose by going to the bishop as you do, so no worries there either...peace out. (BTW.. since we know she had already decided to kill him before May 26, I think it's relevant to wonder why she played out May 26 as she did).
I'd agree with you, or at least find your version of what happened next more probable, if her story about what happened when she arrived in Mesa made any sense. It doesn't. If she had manipulated TA into letting down his guard with that call, there would have been no need for her to lie about her arrival, but she did. She didn't watch videos with Travis, she didn't even know what wason the videos she said they watched together.
Yep, and Napoleon just laid there unaware of her as she came in through the garage, walked to the office, and stood in the door for almost a minute. It just didn't happen that way, and nor did Travis sleep until 12:30 and yet manage to send a text at 12:23 the next morning, etc.
IMO, TA believed and meant everything he said on May 26, including that she was a liar to her very core, that she was evil and sick, that she had deliberately used sex to ruin him. It follows for me, given the whole context, that he no longer believed in unicorns or her stories of rainbows, and knew there was absolutely no reason whatsoever to trust anything she said.