Not that I know of, but it's sorta perfect, for values of perfect that are horrifying and allow a critique of both sets of source material...

Makin' Time (Enough) with Mom
Voldemort's Children
The Kneazle who Walked Through Walls

I'd be likely to make the main character a two-thousand year old Draco, who travels back in time to bang Narcissa and Bella, but that's too straight for most HP fanfic...