From The Grey House:
Most humans, like Bethany, were unaware of the creatures in
the shadows. Natalia felt it best to keep Bethany and other humans unaware of
the creatures. She learned herself, at too early an age, that monsters existed.
Not all were non-humans like vampires or werewolves, either. Some of the worst
monsters she’d met were humans. Still, the human ones could be held in jails,
prisons and hospitals. No one could contain a werewolf in jail. Not for long
anyway.
That’s where the Slayers came in. They were sent by God to
hold back the monsters. Most times, Slayers killed the monsters outright, even
if there were humans around. Natalia didn’t agree with that. She felt there was
a better way. She found she could approach most vampires if she was careful.
Sometimes, she could approach werewolves, but they were trickier. Too close to
the full moon, their rage was just under the surface. She rubbed her shoulder
as the memory of Charlie’s betrayal came back to her.