This is what I think was the catalyst for her actions too, that is the tell off message she received from him. By the way, was that message presented/put into evidence or is that a story JA has presented minus the proof? The info that stands in my way of believing wholeheartedly is that TA told a friend about what he wrote to JA and the friend warned him or asked him 'aren't you afraid she'll take revenge on you' or something like that. Apparently TA wasn't concerned and shrugged his friend's comment off. At that point, the subject was dropped.
Come to think of it, the friend's acknowledgment of the message is a form of proof I guess.
If by that time, TA felt that JA was a sociopath and wrote those vile words to her calling her such, then why the heck did he let her back into his house on June 4? Furthermore, why would he engage in sexual activity with her after he said such extreme words to her? He was thirty years old, not a teenager or so young as not to have ANY life experience. His behavior makes no sense to me and causes me to imagine that he could have regularly acted out meanly, believing it was okay to behave that way, causing his words to be empty over time.
Like a ranting person blowing off steam and after they decide it's time everything should be okay again, everyone else is expected to accept that too. Ever know anyone like that? I have.