I'm 4 years no contact with my narc mother. There wasn't a big not speaking thing just that I was fed up of always being the phone phoning her to hear about her tales of woe of course or asking her to visit her grandchildren and I thought "why should I?" That's what she wants really. So I stopped phoning and visiting, about 6 months later I got a letter in a card for one of the DCs telling me to contact her so I wrote back telling her exactly why I wasn't bothering with her anymore, big mistake got one back saying everything was my fault, I think I'm better than her, she doesn't feel welcome, even as a little girl I made her feel she was beneath me (yes a child can do that to an adult) so I though she's ever going to take any responsibility for the things she's said or done huge gas lighting.
I don't know what she says to other family members I don't care really they've never actually said anything. My brother is the golden child and its hard to hear him going on about how much she does for his DS when she's not even met one of my DC 
I don't miss her in my life but I really miss having a Mum the kind I see that my friends have.
Anyway sorry to digress I think you are angry at allowing her in again just for her to hurt you again. You are angry you don't have a "normal" Mum.
All you can do is maintain no contact and focus inwards on your own family, keep contact with other family members, if they ask tell them once why you don't talk to her anymore, if they "side" with her then its their choice and your better off without them too.
Take care and you'd not alone there's a lot of us about unfortunately 