After reading some very insightful posts here, I have determined that I was unqualified to label my mother as being NPD, & I apologize to her now.
She surely suffered from extreme anxiety (& was antisocial), but people with extreme anxiety are no social butterflies. It appeared to me that she disliked me greatly, but I may have given her good reason for that (& I really don't know).
It's true she did have frightening rage episodes & hate for many, but now I think she needed treatment for that paranoid anxiety of hers, & things probably happened to her early in life, that destroyed her ability to be close to anyone. It may have been terrible for her (during the depression era) cuz they were extremely poor, & frequently not fed as children. There was alcoholism in her dad's life for sure, that much she did tell us. But very little else was shared.
I never knew her as a person, nor did she know me. Something seemed to torment her, but never disclosed.
I'm guessing she did her best. I'm sorry mother, that I didn't know you, but I judged you. I hope you now rest in peace.