From Protector of the Grey House:
Vincent’s eyes moved from her lovely features to Charlie’s frantic one. He caught the werewolf’s eyes, which stilled the ramble of words. Charlie’s expression went from anxious to confused to frightened understanding to acceptance. He bowed his head and fell to one knee.
“She still owns my life. If mine is necessary to save hers, I gladly give it.”
“Not your life: your blood.” He looked back at Natalia. “Possibly.”
Charlie stood, then went to lean against the nearby wall. “When?”
“If Rebecca can’t find ropes soon.”
“What will she do to you?” He remembered his own attempt to change Natalia.
“I don’t care. I will not allow her life to end this way.”