Respectfully I actually disagree with a lot of what you've said here. I do agree he was symbolically killing his mother. I said early on I felt she annihilated his identity and due to the deep enmeshment of his family of origin, he didn't see his kids and wife as separate from himself (which, having an apparently narcissistic mother, means her) so he annihilated his family (and thereby annhilated his non-existent self and his mother).
But I very much disagree with most of the balance. Shanann could not have prevented the murder. There was no working on the marriage or herself as a means to prevent that psychopath from killing her and her girls.
His "mousiness" was not within her control. And if he was unhappy it was up to him to speak up, not up to her to know something was wrong and change herself.
I see nothing much wrong with Shanann. Of course not perfect but she didn't seem controlling to me. She had a strong personality and filled the void his annihilated soul created. Which is why he picked her. He had no identity so he liked women who had strong ones.
But no one could ever really make up for what he lacked.
Regardless, he didn't exhibit psychopathic behaviors, IMO. In fact that was discussed on here by one of our psych experts.
He exhibited nothing much until he annihilated his family.
But Shanann very much knew their marriage was in trouble. She discussed that a lot in text messages and other correspondence.
So? That couldn't have saved her and her kids' lives because no one can keep a marriage at a fever pitch at all times and someone like CW with an annihilated soul likely went through life feeling a lot of nothingness. So he would be prone to equating the heady excitement of a new sexual relationship with love and life. It would've obsessed him. Because it caused him to feel something. Something strong admidst years of gray blandness.
His marriage could've been perfect and never could have competed with that because no marriage can ever sustain that level of excitement. So he was obsessed.
And then, NK wanted a man who didn't have kids or baggage.
So even if Shanann had left him, he was still going to kill his wife and kids, IMO. Because NK was pressuring him not to have a family, as inexplicable as that is.
I believe it would have been impossible for Shanann to realize the danger he posed or signs that something that dark was within him, because the very thing about these types of family annihilators that is so insanely shocking to everyone is that: There. Are. No. Signs.
There are millions of quiet, unhappy men who let their wives run their lives, who sit in the shadows and don't express themselves and pretty much none of them do what CW did.
Most family annihilators in general have a history of mental illness or criminal records/domestic abuse histories. What sets apart a man like CW is there are no signs. There's nothing that could remotely have warned anyone who knew him, including his wife, that there was something that dangerous within him.
They're masters of the mask.
I believe this line of thinking (that had she just been more sensitive and self-reflective she would possibly be alive) comes from fear. She wasn't sensitive and self-reflective. She wasn't a good wife. So she got killed. But I'm sensitive and self-reflective.
I'm a good wife. So this won't happen to me.
Meh. I believe this can happen to anyone. It's rare but when it occurs it comes out of the blue and cannot typically be predicted nor stopped. Maybe a random sixth sense might help someone now and then but the inexplicable doesn't lend itself to protective measures.
The value of learning about these people is about solving crime. Based on studies this is too complex and the signs are too vague and too common to help prevent a family from being annihilated by this particular kind of family annihilator.