IMO the theory raised that a culmination of stressors may have pushed JA over the edge is a good one, especially when there is an underlying psych disorder. I have read the many posts on speculation of diagnoses. From watching the interviews JA gave as well as the police interviews, JA fits the diagnosis of sociopath. She was able to "follow the rules" when they fit her life. She appeared "normal" to those who knew her in her jobs as a waitress and in PPL. And to TA initially. When she realized that changing her religion, location, looks and that sex was not enough to keep TA, she killed him. No remorse. No guilt. The premeditation of her act rules out psychotic break. It is kinda like when neighbors are interviewed after the person next door kills someone and they say the guy was nice, quiet and kept to himself. That person was able to live amongst them never giving anyone a clue as to who he really was. Hannibal Lecter is a perfect example of a sociopath. As is JA.