First Full Moon by Michelle Alstead

More secrets. More lies. I'm going to die.

She wanted a car for her sixteenth birthday, not magical powers…
Candy McGregor is a teenager living in Sequim Falls, a small East Coast town, where the McGregors own just about everything. While her grandmother grooms her to run the family business — a pharmaceutical empire — Candy dreams of a life where she’s known as more than just a last name. When the monthly family dinner turns into a horror show, Candy discovers the McGregors aren’t so much blessed as they are cursed.

At midnight on her sixteenth birthday, Candy inherits both the ability to do magic and the destiny to become a wolf on the next full moon. There is hope of a life that doesn’t require being chained up once a month. If Candy can undo the original spell that created the curse, she can rid the world of werewolves and remain a witch. But there’s one really big problem. Not everyone hates being a wolf.

With the next full moon looming, Candy must take on forces that will do anything to stop her. Will she break the curse or surrender to life as a monster?