***WARNING! TOTAL ARMCHAIR PSYCHOLOGY AHEAD!!***
Ok. Darlie was suicidal weeks before the murders.
One aspect of suicide is wanting the pain to stop. There are extra reasons, which may differ from person to person, but it comes down to making the pain STOP.
When you get to that point, but don't do it, there are reasons for that, too.
What were they for Darlie? Probably pure self preservation. Not for her family, or what it would do to them... more likely she couldn't do that to herself.
But the feelings around suicide don't just *poof* go away.
The state of mind that you are in doesn't just appear out of nowhere, and doesn't just disappear into nothing.
We know she had a histionic personality. Remember when she cried rape when she wanted attention at a party?
And I think that's the key to all of this.
Now, remember, Darin has been with Darlie since her mid-teens. He was used to her behavior, and long ago bought into her dramatics. Probably why they stayed together so long. Their neurosis fit with each other.
Whereas someone else would have seen through her rape story, or figured it out later and dumped her, he didn't. He bought into it, for his own neurotic reasons.
After years of this subtle manipulation, I believe Darlie had him Wrapped.
I think she killed those babies, and he walked into the mess. And when he walked in, it was still about her...
In other words, I don't think his first actions were to help the boys... I think he had to spend time restraining her. (Hence the bruises)
Once he got her back to earth, I think she manipulated him into helping cover for her. And it wouldn't be hard, she knew how to press his buttons. She knew.
Her reason to begin with?
I posted in here somewhere...
I think she saw others as objects, not people.
I don't think she was equipped to deal with problems.
Post partum depression, diet pills, financial problems, emotional problems, youth, talk of divorce...
Put all of that into a jar, and shake it up.
What made her snap that night? I don't know, and have a hard time imagining.
But I think when all was said and done, they flew by the seat of their pants.
Came up with the basic intruder story, and didn't think of the details that would trip them up. In her previous story of crying rape- who questioned all that closely? They assumed they'd be believed.
At any rate, I think the whole night was one big emotional explosion.
I don't think there was one single rational thought floating around anywhere.