I really enjoyed reading this story! I loved your explanation of house elf magic, and Winky's willingness to help. (I miss Dobby!) And great sex is always good. :D I liked that Snape had to be chased a little bit too. And I loved your ending.
However, the fact that you used the names, likenesses, and descriptions of the lives of real people made me uncomfortable. I do think that it would be a good idea to add a warning to inform readers so that they can make the decision to read before they start reading the story.