The problem for me is that she was perfectly able to conform her behavior to the law whilst her husband was in the house. And she tried to get him out so she could hurt the children.
That's not a problem for me because people who have such delusions often can and do wait until they have an opportunity (or create one) to do it when they know they will be able to complete it.
I’ve posted both your comments above so it’s clear what I’m talking about. I’ve met people who were in psychosis. One in particular sticks in my mind because the psychosis wasn’t immediately obvious. That is, he wasn’t shouting or raving or drawing attention to himself. He was quieter than usual, which I did notice, but I just thought he was tired or pre-occupied. He then came up to me and had a chat, as he’d done many times before. It started off normally, then it became apparent from what he was saying was that he very much wasn’t mentally well.
However, he was completely unaware of the fact his conversation and thoughts were insane. He made no attempt to hide things or whisper. He spoke completely normally as though we were having a regular chat - except what he said was clearly mad.
My point is that someone in psychosis wouldn’t need to ‘create an opportunity’ because they wouldn’t recognise the madness of their thoughts and plan. To them it would be normal. Thinking about LC, if she was in psychosis a) PC would have noticed; and b) she’d have carried out her plan with him in the house working because she wouldn’t have recognised it as insane, but just an everyday job she had to do.
To me, the fact she knew enough to know she needed him out of the house because he might stop her, shows she was aware she was about to do a very bad thing. If you say, ‘ah, but she was so mad, she had no idea what was going on’, then I draw your attention to my first point: PC would have noticed something wrong, something different. He didn’t. He said she had a good day, they’d communicated and she seemed fine and normal.
Did she suddenly became psychotic when he left the house, I think that’s very unlikely. Moreover, if she only became psychotic at that point, why was she doing the pre-planning of getting him out of the house prior to this supposed sudden psychosis?