Well, a true narcissist, for the most part, does not change...very hard to treat, even by a professional. They are who they are...and the decision is how to live with them...IMO, the only thing one can ever really do is learn to not be manipulated and be able to withstand almost on a daily basis this kind of behavior. When they feel someone slipping away, they do what they have to to reel them back in. And narcissists almost ALWAYS choose someone who is an easy target and who will put up with them. I would think that a professional would have to really help someone like HD to live the way he is if he wants to stay. Personally, I don't know enough about her to know that she is one...you all know much more than I do. But my ex-bf's ex-w was the worst case I have ever in my life seen, and I did a good bit of reading on it. Very hard to treat...they only think how a situation affects them...not that they don't have the ability to care, but bottom line is they have to have the upper hand at all times.