Should you burn bridges for someone who didn’t ask you to?

My ex was a narcissist. I feel for her, because she'll never fill that void with true love. Is there a way to tell her to heal from narcissism?
How did embracing the idea that "you're no less than the trees and the stars" help you find your own value and identity?
After years of navigating a difficult relationship dynamic, how did you redefine what healthy communication means to you?