Diana Marik
The Seven Deadly Veils
Vampire Series
Book 1: Veil of Shadows
Book 2: Veil of Mists
Book 3: Veil of Darkness
Book 4: Veil of Secrets  
Book 5: Veil of Death
Book 6: Veil of Blood
Book 7: The Final Veil

The Seven Deadly Veils Vampire Series

Check links for the first few chapters of Book 1 of Veil of Shadows, Book 2 Veil of Mists, Book 3 Veil of Darkness and the Novella, The Blue Veil.