Trial by Thrall. Trial Series, #2

Novella #2, Trial Series. Sequel to Trial by Moon. After the shock of her first trial, Leslie believes she can handle anything, including turning into a magic elf or whatever the fae really are. But the differences between alpha werewolf Ben and Tristan - the enigmatic leader of the fae, whose abs and sexual prowess are the stuff of dreams - soon have her wading into new supernatural waters. Guarded where Ben was assertive, Tristan is hard to understand and even harder to predict.
The most unnerving part: he's empathic. He can read every tiny little emotion she experiences. Such as . betrayal. The Book of Secrets has revealed a truth that leaves her questioning everything - and everyone - she's ever known. Something far worse than the Trials, and more frustrating than Tristan forbidding her from using her temporary fae magic to save an entire generation of his people. The more she learns from Tristan and the Book, the less certain she becomes of her own world, and she begins to resent the Kingmaker magic that ensures she's only fae for a week.