Oh right, the Earth King's seal. Which I guess is a "get out of jail free" card and should be the final word on the matter, because it's not like Kuei is functionally clueless about the vast majority of his kingdom and its local politics and his decrees shouldn't be treated as inviolable but need to be negotiated further.

Weirdly, Kuruk doesn't get much focus at all, even though Koh is the fic's big bad and Kuruk is the only known Avatar in canon to have actually fought him...

Vathara can't bring up Kuruk's canon encounters with Koh, because they go very against her depiction of Koh as a Satan figure who wants the downfall of the Avatar. "I'm going to teach you a lesson about responsibility by stealing your GF's face" doesn't fit with her version, who probably doesn't want an Avatar who is goofing off to get off their ass and start arbitrating more.