Many defendants including LS have personality disorders but the issue here is that having a PDO does not equate to being criminally insane which is the defense here to be determined by the 12 jurors.
IMO, I have no doubt the prosecution will prove LS was sane, and therefore LS will be found guilty as charged in the criminal complaint.
From my point of view (speaking as best I can as a potential juror), they already proved it. She could rent a car and deceive about the nature of that rental. She talks about immunity. She is not catatonic, not speaking word salad, not claiming to hear command hallucinations and instead, keeps coming up with (to her) perfectly reasonable fictions. Each time she changes her story, she tells another lie that she hopes will be convincing.
I am guessing that, like most spouses of people like LS, AS had gotten used to slicing through lies and simply ignoring them. I do believe he had plans to leave her, but having been a similar (violent but non-murderous) situation, I understand how it can take some time (precisely because in the deep recesses of one's mind, the leaving partner is very worried about more violent acting out). People worry way more about men causing this violence, so for AS, perhaps this was back-burnered until he could make certain kinds of plans and arrangements.
Tecia's days were numbered in that house, and as the wife of AS. People like Tecia are generally very perceptive and possess great intuition into any bad news or unwanted actions heading in their own direction.
She's not criminally insane. And I'll add that most of the people I spoke to inside the hospital for the criminally insane were people diagnosed with compulsive sexual behaviors, not child abuse. None of them seemed to have an Axis I diagnosis but nearly all shared the common feature of having had enough money to hire a private attorney to keep them out of regular prison. The ward I worked on was 30 serial rapists. There were only a handful of murderers in that hospital, all of them diagnosed with either schizophrenia or mental retardation/profound developmental disorders or both. Some had been there a couple of decades, so "archaic" language was on their records. Before the days of the newer anti-psychotics, those patients were literally kept in padded cells and their "day room" had a restraint system. It was chilling.
IMO.