Why are there no stories about Nyx and Flurry Heart interacting?

5976769
It’s probably because Nyx is an older character now while Flurry is still relatively new.

Yeah, Flurry is waaaay too new on the scene, and most continuities featuring Nyx are established, ongoing, and don’t involve Twilight being an Aunt.

5976769 This was something I planned to write after the story I am writing presently. Of course I’m not gong to complain if somebody writes it first.

If there were any stories where the two interact, I wouldn't be surprised if they had a dynamic similar to Simon the Digger and Kamina from TTGL.

Are you mad?! Do you realize the shear plethora of diabetic shock that’ll induce?

5976769
Currently working on a story with that relationship, though I had to go through Valient Heart first, since Cadance gets pregnant earlier in Pen Stroke's universe