I’m pretty out of the loop as far as Sansa/Tyrion fic goes now - it’s been a long time since I read any fresh, probably because I only read in the #gotfic tag or on AO3, and it was always more popular on ff.net. As well, many works in the S/T tag on AO3 feature pairings I just can’t stomach, so I may be missing some things. I’ll do my best, though!
I’ve included links to author’s tumblrs where I know them, btw!
(also, because I am shameless, here are three of my own Sansa/Tyrion fics: Kindness, Not Fear - post-series multi-POV, this was my first ASOIAF fic; Wednesday Lunchtimes - modern AU teacher fluff; The Imp and the Winter Queen - canon AU where Sansa marries Joff but things go wild from there, slightly fairytale flavoured. Enjoy!)
As I say, I’m out of the loop - I don’t read that awful much ASOIAF fic in general anymore - but poke around the #sansa x tyrion tag, you never know what you might find!
and please for the love of all that is holy do not refer to it as Sanrion love yourself