...I do have concerns with XW's mental state but I haven't really talked to her or seen her since May. The situation with the kids is still very sad and I'm sure that XW still blames me for a lot that has happened. I'm not sure if she is in counseling (I still am and D21 has even gone to see my counselor on her own) but that is really none of my business anymore. That all being said I do hope that XW thrives and succeeds with this new venture of hers.
You actually sent a letter to someone and mentioned your ex wife's mental state? You talked about the "situation" and what your ex wife might blame you for, if she's in counseling, if you are, etc. etc. etc.
Are you serious?
That is nuts.
Ken, you never send a letter discussing such personal details to other people. It makes people uncomfortable, no matter how much they love & care for you and how much you love & care for them, you don't burden others with this kind of information. If no one else has told you, I will be the one, you cross many personal boundaries sharing this kind of information with other people, boundaries which make people feel very uncomfortable even if they're too kind to let you know that.