The Legion of Blood and Fire by M.M. Rey

In the enchanting Southwestern desert, a century has passed, when the vampire Regina awakens from her slumber, around the year 2123. Alongside her is Maverick, a soft-spoken, human male from New Mexico, who's decided to help Regina on a perilous mission, despite the never-ending violence, and enigmatic disasters plaguing the dystopian future. Where are the coven elders? And why is a human being targeted in the midst of these events?