Becoming — Kelley Armstrong

Elena Michaels has just been bitten by her boyfriend, psycho werewolf Clay Danvers. As the werewolf curse is slowly taking over her body and mind, she clings to the last shreds of her humanity, scared that her life will never be the same again. As per readers' request, finally the tale of Elena's Bite. 'Becoming' covers the darkest part of Elena's introduction to life as a werewolf, and fills in an important chapter in the Otherworld story.

The Otherworld, a series of novels written by Kelley Armstrong. Elena Michaels is the world's only female werewolf. And she's tired of it. Tired of a life spent hiding and protecting, a life where her most important job is hunting down rogue werewolves. Tired of a world that not only accepts the worst in her--her temper, her violence--but requires it. Worst of all, she realizes she's growing content with that life, with being that person.