Shadow of the Wolf — Donna Oltrogge

Mariah Carstairs thought she'd found a home in the Yosemite Valley, that she had eluded Rafael Bolivar, the Master Vampire who had killed her parents. She had even thought she might have found a man she could love in Randolf Wolfe, at least until that fateful night when Rafael found her again.
Randolf “Dolf” Wolfe was a shape-shifter, a werewolf, a thing of myth and legend. He had all but given up hope of ever finding his mate, until he met Mariah Carstairs.
Dolf and Mariah will face a terrible challenge from a Master Vampire that will stop at nothing to get what it wants. And what Rafael Bolivar wants is Mariah.