I would respectfully submit that she's a lot closer to Lawful Evil; she still claims to have morals and codes that she doesn't break which she believes puts her morally above other villains. She's also wedded to the concept of the strong ruling the weak, and uses the law and the laws of the vampires and weres to keep her people in line. She values allies, but for what they can give her and not for themselves. She speaks the truth (as she sees it) and enjoys the perceived honor of holding a leadership position in the Marshals.
Personally, I've always found Lawful Evil to be the scariest of the bunch.