I also suspect I am ND and I would be devastated to think I'd upset someone. It's so hard to tell with this parent as they often repeat stock phrases which fits in with what I read about masking... but then this is only 50% of the time, they can function as a pleasant person the other 50%... which also makes me think of masking. But then they will eye roll, and tut (not in a swimming way, in a disapproval way) to express their annoyance which just seems like horrible behaviour. It's so complex.
But you are all right, I should stop trying to find a reason. This person does seem unhappy with me when I don't toe the line, but then I am unhappy a lot more of the time trying to work around their mood swings, so does it not make sense for me to take myself out of the equation so I'm not upsetting them by falling short? Except of course, from what a lot of you lovely lot have said about the egos of your parents, this will damage their ego. They would not want anyone to know they do not have anything less than a cosy picture perfect relationship with their child, as they would not want to look like the bad guy... now I'm here and talking about it, I can see that it all follows the same pattern...