*I* wrote... 3 drabbles on this theme, but they are hardly granted the honour of 'fic,' so I am not asking if it's me. XD
But if you can you recall the author... = :)! Or an identity - fest fic, or journal fic, or archive fic? And if you say that their children inherited actual!Snape's nose, I'd love the fic even more!
This is probably the only way I'd ever branch out from snarry. C: In a way that I'd still be reading snarry, but one of them'd be polyjuiced into someone else! So that on the inside, where it counts, it's still snarry! :3