Discard from a high-functioning narcissist

Reading here, I've learned that narcissists come in many flavors and varieties. Mine was very high functioning. Seen as a wonderful, natural leader. A position of respect. And that's what kills me. I can't say to myself: oh, people will catch on. No, they won't. Definitely the new guy, post-love bombing. She discarded me after a 16-year relationship and a month later was committed to a new guy. Replaced like a light bulb. I'm left isolated, thinking my life is a lie, and just frightened of people in general. Her? Just skipping along. Sitting atop a narcissistic supply pyramid. Not worried about people because she can play them like a concert pianist. It is so polar opposite extreme, it's galling.