Really interesting discussion here.
Just wanted to pick up on something a page ago that @ItReallyDoesntMatterAnymore said.
Although I am not sure if it is due to ND, he struggled to the point of barely coping, anyone, NT or ND would probably struggle with that level of grief. But maybe they wouldn't take it out on their wife? Or just drop everything and only see their own needs? Would an NT man grieve without turning into an angry, frustrated and selfish man. I don't know.
yes, it can and does happen. With women too. It's a human thing. Some people become very angry and selfish in their grief - something they loved dearly has gone, and anger and selfishness is not uncommon. Normally it passes, but people can remain marked and changed forever by it. After deep grief, I don't think you are ever quite the same as before it.
I wonder if some ND people take longer to come to terms with loss and struggle to handle the change more than most NT people. But it's extremely complicated as the nature of the relationship with your parent, both in the past and at the time of death, makes a great difference to the nature of the grief.