SOLVED. erotic overweight witch slave for vampire [s]

[Kim]

the woman in the book is a overweight girl, who doesn't want to go to the annual meeting with supernatural beings. As far as I remember it's the vampires that "holds" the party. In that party one woman is chosen as the leader slave of the year. She is chosen, and becomes the vampires slave. First she doesn't like it but not long in the book she likes it, the SM. I special scene in the book is when i drinks her menstrual blood.

[Tab]

When did you read this book?

[Kim]

well it was this year but I can't remember when precisely

[Jane]

Could it be,

The Sacrifice

[Kim]

Thanks Jane... thats the one!!! :)