Night Huntress Series by Jeaniene Frost

Night Huntress Series – A half-vampire named Cat Crawfield teams up with the powerful vampire Bones to hunt supernatural threats, uncover dark conspiracies, and navigate a passionate, dangerous romance while saving the world from deadly paranormal enemies.

Total 10 Books in the list - 

• Halfway to the Grave
• One Foot in the Grave
• At Grave’s End
• Destined for an Early Grave
• This Side of the Grave
• One Grave at a Time
• Up From the Grave
• The Other Half of the Grave
• Both Feet in the Grave
• A Grave Girls’ Getaway