Would you speak up to a narcissist ex friend?

My friend of 27 years keeps messaging me every so often to come visit her but I do not reply. I stopped contact with her 4 years ago due to her lying to me twice and also putting my sister down over her medical condition..telling my sister to just "GET OUT MORE" when she has unbearable pain. Also told her not to "feel sorry for herself" 😵
I just do not reply to her messages because if you tell her she defends herself and thinks she does NO wrong..ever. Would you eventually say "I am no longer friends?? " Or just let it go until she sends another message? Only ONCE i spoke up to her in 27 years and she wrote 3 paragraphs defending her rude behavior then said *I* was "punishing" her..just for saying ONE thing I thought. 😶

Zaphod42 · 51-55, M

Narcissists have a tendency to try and destroy the lives of anyone who dares not to like them, so how you cut them off should be directly proportional to how much actual dirt they have on you vs. how much the made up lies they’ll spread will hurt you.

In my case, I don’t have much to go after, so telling my mother and sister to stay the hell out of my life didn’t cost much. Even so, the lies spread through the family were fairly brutal.