Being a born werewolf, Derek couldn't fathom having his freedom taken away from him like that. It might be a broken system, but it was the only system they had and Derek couldn't do anything but try to make it bearable.
"Every Master/slave relationship is different," he said softly. "I've known Masters and slaves who were devoted to each other, beyond reason. Willing to die for each other. Willing to risk everything to be with each other." Willing to be bitten, on the chance that she would be strong enough to be with him, forever.
"Scott should know," he decided. "He should know that your relationship can be defined by the two of you."