We Own the Night — Kristen Strassel

The Ultimate Manipulation. 
Callie Chabot would stop at nothing to save her ex-boyfriend Blade Bennett from the clutches of vampire clan leader Talis de Rancourt, even if means becoming immortal herself. What she doesn't know is that Blade has already defeated Talis, and he's waiting for Callie in the afterlife.

Now Callie only has her creator, Tristan Trevosier, to turn to for guidance. But he's too wrapped up in the debauchery of the Las Vegas rock scene to give a damn about the particulars of being undead. That's enough to drive Callie crazy on its own, but female vampires are automatic clan leaders.

Not only does Callie have no idea how to wrangle a vampire clan, but her would-be followers have more to gain from her failure. They instead choose to follow Blade--and he's hell-bent on making Callie pay for her bad decisions. Since he took out the existing clan leader, that automatically puts him at the helm of what should be Callie's new clan.

A Master of Deception.
That's when seasoned rogue vampire, Cash Logan, shows up, shrouded in magic and mystery. No one is sure which side Cash is on, but Callie needs to take a chance on the one vampire who is willing to give her the answers she needs, no matter how dark and frightening they may be. Callie must trust her instincts and form alliances that may backfire. Cash shows Callie that playing nice is no longer an option, and that fixing her wrongs won't always make everything right.

To take control of her clan, Callie must look to her rival to discover exactly what makes her a leader.