I don't know who she was. The Dr nor my ex would tell me. I said the exact same thing to the Dr that she should know. If I were wearing her shoes I would want to know just like you said. We should have that right as victims or would be victims. I think I had it pieced together that is was a woman that worked at a gas station on his way to work. I went OVER and OVER and OVER his normal routines to try and figure it out. The only person I came up with, thru my own detective work, was an older (50ish) sweet lady at the gas station. It could very well have been someone that he worked with at the plant tho. I will never know and hate that. I don't know if he still harbors an attachment for her. We only talk when necessary and my skin crawls every time. I can say the other thing that always stood out to me is that in 8 yrs he never hollered at me, not once. I did a lot of hollering tho lol. I just always thought I was the unstable one b/c he could ALWAYS keep his cool and I would get upset about stuff. I would NEVER trust anyone that doesn't have some sort of temper as crazy as that sounds.
Kinda like KC, although she was explosive at home, others saw her as super sweet, funny, energetic, very outgoing, life of the party. I don't think she is PS by any means. I think she has borderline personality disorder or something along those lines. He's very likable like her.
This guy the tech may have had an obsession that she never had a clue about. At least not to the extreme he did. Another possibility is that he was obsessed with someone else in the lab and he saw her as a threat to that relationship as an interference/competitive way with this person. I dunno.