Black Abaddon. The Vulcan Legacies, #1

Ally Watson struggles to live with the choices she made, the worst of which resulted in her soul mate's death. Michael's sacrifice to save the girl he loved may have reversed the Apocalypse, but not the permanent damage inflicted by living with his loss. Ally begins a journey where she soon discovers that death is not always the end, but sometimes the very beginning. With old friends, she journeys to the Nosferatu Nation where she meets with new alliances willing to help her in her quest to defeat the Devourer.
At every turn, Ally unearths secrets that threaten to destroy those she loves. The second installment of The Vulcan Legacies series will put Ally to the ultimate test, forcing her to face her fears and the true destiny she will fulfill as Azrael, the Seraph of Death.