Hearts Blessing has been here a long time also. I don't personnaly accept MLC as a science, just an excuse to express weak morals and character flaws.
I too had a high maintenance beauty queen as a wife, once I stopped affirming her beauty when life and gravity caught up to her, all hell broke loose. Another man who had been there and done that literally a few times knew exactly what to say to make her feel young again. You know what I mean.
You see a bit of hope in the stages, that she may get through the tunnels and things will work out. Just don't allow yourself to excuse this misbehavior as a clinical diagnosis. It's hurtful and unwanted. Not an excuse. I agree that there are stages of misbehavior, it's a justifying process by weak willed or character flawed humans and is dependant upon reactions to advance or regress. Oddly, you can look around in church, half the congreagations are going thru this process. Hurting, lying, cheating, stealing, etc. It all comes back to choices. Live with what you can and do your best. Love that little boy, he'll never leave you.