So I'm sure somebody somewhere wrote a fic about this. At least I hope so :)

I'm looking for an AU, where instead of attacking Lilith Sam actually makes the deal in 4x18 The Monster at the End of This Book.

Plus poins would be:
-Lilith keeping the boys as her pets
-dark!fics where she takes her time killing them
-Dean being ok with it, since they are saving everybody
-something wicesty (totally optional)

But I'll take anything within the general setting. Thank you :)