[ColdWater]

Of course, such a domestic dispute (I have no evidence either way--might not have happened) could lead him to reach the mental state where he was irrational and decided to burn down the house, etc.

He had been planning this for months. Quite coincidental that she happened to 'check out' the night before.

[randomhero97]

Quite coincidental that she happened to 'check out' the night before.

That's called "speculating."

[Smokin' Joe]

He might have been planning this for months, but that does not mean she was privvy to his plans.

Let's face it, the guy had issues.

Someone who is being paranoid will shut out loved ones, too.

Things may have just reached a head and she either left him or he ran her off.

That still does not mean she knew of his plans.

I see both women as victims here, they have both been widowed.

I do not see where one widow can sue another for the actions of an adult third party.