The Elven Spymaster’s Thief by Elisa Rae

In a world full of elves, woodwose, gargoyles, and brownies among others, humans can’t help crossing paths with all of the magical species. Well, everyone except Avril. She manages to avoid all elves. Then one day, her master orders her to steal a dagger from the very elf she wishes to evade most, the elven spymaster of Eldarlan. Bound by her indenture, she has no choice but to obey. She plans a swift sneak and grab mission, but things go awry.
Illeron knows more than any elf should. The gathering, analyzing, and disseminating of information consumes his life to the point his brother suggests he needs a distraction. So, when a human woman breaks into his study to steal his dagger, he seizes the opportunity and offers her a bargain she can’t refuse. And a fate he never imagined.