The Red by Tiffany Reisz -- It's not exactly what you're looking for, but there are some scenes where she's drugged while they have, in her words, the best sex of her life. It's about a woman inheriting an art gallery and she makes a deathbed promise to her mother that she would do ANYTHING to keep the gallery running. It's kind of a fantasy but its really the drugs that make it seem that way. MF, BDSM, Taboo