Have you tried:
- "World of Lupi" by Marjorie M. Liu
- "Circle" by Linda Robertson
- "Jane Yellowrock" by Faith Hunter
- "The Bloodhound series" by D.D. Barant
- "OSI" by Jes Battis
- "Oldest City Vampire" by Nancy Haddock
- "Laura Blackstone" by Mark del Franco?
- "Greywalker" by Kat Richardson
- "Walker papers" by C.E. Murphy
In some of these series there's only a book yet.