Well....apart from theorizing she had a crazed extramarital lover, ...what else ya gonna say? No one mentioned the blood stained boots. The husband or children supposedly didn’t behave particularly bereaved. Maybe she had more than one lover and was a nymphomaniac and husband is glad to get rid of her....lot’s of armchair stuff to do. Maybe all guesses should be prefixed and suffixed with the “IMHO” tetragrammaton.... IMHO....
Cheaper than a divorce, and perhaps a life insurance "bonus".