Bitter Rivalry (Bitterroot Series Book 1)

There’s been a murder in Paradise ...
As daughter of the late pack alpha, Regan Vuk is certain the title and responsibility is hers now. She is fast, smart, determined and has trained for this future her whole life. There’s just one person standing in her way.
Charlie has never lived in one place long enough to call it home. All she’s ever wanted is a place to belong in the world, but Charlie’s hope for safety and security vanishes when she’s kidnapped and taken against her will to meet the man who abandoned her mother seventeen years ago.
When Charlie finds out the only way to fit in with her new relatives is to defeat her long-lost sister for the role of alpha, she refuses. That is, until she meets Owen. Alluring and mysterious, Owen, is the “prize” in this twisted battle for power.
Regan has no doubt that, although she loathes vampires, she will be the one who "wins" Owen.
Only problem: Charlie's already fallen for him.