Silver.

Real power, true power came from Rothwell. And Charles vowed to have it, the earldom and all that went with it. Silver vowed to destroy Charles, just as surely and uncaringly as he had destroyed her father; just as he had intended to destroy her. She needed him to want her...to desire her...until he'd do anything to have her. But first she needed a tutor: a man who wanted no one. He would help her bait the trap...