I'll stay out of her business and assessing her state of mind. But there's a good bit of the story that is left out when I take this repose about my divorce. It was a good thing given the toxic circumstances of my crumbling marriage. So in that respect, yes, she did us all a favor. But let's dig a bit deeper to see where things went foul.
It seems the biggest marker for success is the general outlook of the other person: Happy camper vs. unhappy camper. In my second marriage I thought we had a match, but the stress and change brought on by having kids sort of flipped her mode.