Looking for a fic

Hi all! I’ve always been a Reddit lurker, never a user, so I hope I’m doing this right 😅 I’ve had a fic on my mind and for the life of me cannot find it or think of the name, so created this account for some help. I remember coming across it on ao3 around 2020-21 with the last update probably being a year or two after that. There weren’t a whole lot of chapters and after a while updates were sporadic :’)

Random possible details:

-canon alternate universe, explicit

-zuko was fire lord and in an arranged marriage with katara

-ursa was from the fn mountains so he sometimes spoke in her dialect to katara?

TW: infertility

-the biggest plot detail I remember is there being some kind of unrest in the fn and zuko needing an heir, but katara being unable to conceive

-may have been bc she was malnourished as a child bc of the war? Or maybe a curse? I feel like there was some mystery there

-one of the last chapters was her finding a secret (kinda witchy?) water bending healer to see what was up

Anyways, I really think this fic might’ve been taken down or hidden :( but, I would at least love to know it existed and see if anyone remembers the name or more about it! Hoping someone does from my little information :) thanks for reading!