Henry's eyes widened, "D—Does that mean you—"
"Well, I still won't allow you to hurt Earl Klaus. I highly doubt he knows what his daughter does behind his back," Duke George said. "Don't worry, Henry. You will be the next Duke, and I will support you through your endeavors to stop Sarah Lancaster from hurting your woman."
"But I forbid you to hurt Klaus Lancaster, and I also forbid you to kill Sarah," Duke George said. "You should show me all the evidence about her activity and planned attacks, and I will show it to Klaus so he will pull out all the support that Sarah has and punish her for being vicious."
…
Henry nodded.
Of course, he still wanted to kill Sarah later.
But for now, stripping Sarah of the aid that she got from Klaus Lancaster should be more than enough to alienate Sarah completely.
'Then, once she is unguarded and vulnerable, I will kill that bitch with my hand,' Henry schemed in his mind.