From The Grey House, Book Three, Protector of the Grey House:
Natalia vaguely remembered waking up twice before, only to feel a slight pain on her leg and then darkness. Not wanting to be drugged again, she kept her eyes closed and tried to look as if she were still asleep. It proved to be harder then she realized as thoughts of the others in the household flooded her mind. Her eyes snapped open and she tried to haul herself to her feet. She immediately regretted it when she felt a slight pain in her thigh. She looked down long enough to see a tranquilizer dart sticking out of her leg. She passed out cursing herself for her haste.
Cat Stark 