Billionaire Werewolf's Princess by Michele Hauf

Fangs…and faery dust

Ryland James is a wealthy philanthropist. He's also a werewolf, and the son of the Faery king. Indigo DuCharme seems like a typical socialite, but as she moves deeper into Ry's world, something in her awakens – something she never could have imagined. She'll need to accept her true nature if they're going to have a chance at love, and if they're going to protect human children from the fae.