Could be that he was, and she took her chance when she got it. Or it could be that she's a loon. Or something else. This is all just speculation, because folks are morbidly interested. You read far too much into the comments.
Actually, it's way to typical. When it comes to women committing a crime, rarely is it ever said that she did it for the same reasons men kill. Even with overwhelming evidence that a woman can kill as easily as a man.
Look at the first few comments on here or on in the press. Than look at the comments made about men who kill their wives. The double standard is ridiculous.
The first post on this thread says "something is up" by post #13 "he was physically abusive to wife or sexually molesting daughter(s)." From there it's off and running.
It isn't all about morbid interest in crime. It's a double standard that goes straight into our courtrooms and has allowed criminals to be relieved of their responsibility for the crimes they commit.