Hello, Believe me, I understand exactly how you feel because my mother has NPD. I remember one Christmas I had to work. Now, I'm an RN and you have to take your turn working holidays. I called my mother and her reaction was to be furious at me. No empathy or concern about what I was feeling about being stuck in a hospital xmas day. I was suddenly overcome with sadness, realizing I had never really had a mother. I felt sadness and loss thinking about how different things could have been if I had a mother capable of really loving another person.
I share this only because the situation made me realize I needed to grieve.

Also in my family the unspoken rule is that noone upset my mother. But, sometimes a person needs to set boundaries and just let other people feel what they will feel. Peoples' reactions are their choice.

I'm sorry you are having a difficult time right now.