I'm not saying she was goor OR bad, just that someone does not automatically become a good person through an affliction, I have known several handicapped or chronically-ill people who were saints and an equal number who were total manipulative assholes. I don't know anything about her one way or the other as a real person, and it is sad about the kids, but on the other hand they are well on their way and very well provided-for, so it is more of an unfortunate but inevitable life event than any kind of catastrophe for them.
John Lennon, on the other hand, was an egocentric hedonist who abandoned his family for a rather unattractive Oriental nut-case, I can't say I can raise any pity for him at this point.