Rzr,

I would tell W this:

However, before a woman can begin to resolve these problems, she has to be willing to work at leaning how to let go of the past and stop blaming her H for everything. in her frame of mind, I believe she has to have some type of guidance from an unbiased source........and preferably, professional.

Basically, tell her that she cannot continue to pin the blame and her unhappiness on you. Encourage to seek unbiased professional help to sort her emotions.

Don't tell her that you want to do "everything I can to make sure I don't make the same mistakes going forward." Instead say that you would do things differently and have taken proactive steps to address some of the concerns--i.e. your parents.

Bottom line is that you MUST stand firm on not taking the blame for every problem under the Sun.