Very much liked this. Thank you.
I am happy to see Drow actually used in a story, they are probably my favorite fantasy race in their various incarnations. However a few things did bother me, though this mainly stems from my knowledge of the race.
1. Drow, like all elves, do not have body/pubic hair. It's not a huge deal, but it's something that takes me out of it.
2. No male Drow of any station would sexually assault a female Drow, if he did, his female superior would remove his genitals with a hot knife.
3. While it isn't unheard of for Drow to rape lesser beings, I'm not sure they would do so in such an open manner, or to a dwarf. A light elf, certainly, afterwards they would probably cut their heart out as a gift to the goddess.
4. Too short, I would have liked to see her raped a bit more, and by something other than fingers. Tentacles, Flayer cock, raped by thralls, something more to build excitement. He'll, I would have loved to see her trade sex for her life, only to be killed after anyway.
Other than those points, it works for me.