A Duke with no power??? The bitch sister can blackmail you and you can't do anything???
1 - If you had your revenge she wouldn't even be here!
2 - You can make her disappear!
3 - You can discredit her so no one would believe her, it would be just the words of a crazy jealous bitch!
Would they let the sister be for the time being?? I'm afraid they are going to... (〜 ̄△ ̄)〜