She is obviously confused in her grief

No good king could take advantage at a moment like this. The poor woman is obviously still grieving, and perhaps she looks to you as a way to relieve the good times she had with your father. Or whatever. You will not be a part of such delusions. I mean taking advantage of an emotionally hurt woman, what kind of pervert does such a thing! As your narrator I must interject to say that such conduct is reprehensible. You gently disengage yourself from her embrace.

"Good lady," you nervously blurt, "you need your rest. Recent events have exhausted us all. Perhaps a good night's sleep will awaken you to the ill-fated nature of this situation." She tries to interrupt but you hold out your hand. "I'm sorry, but I could never forgive myself if I breached my code of honor by taking advantage of you. Good night, I wish you well." That being said, you and your two goody shoes beat a hasty retreat for your room. How sweet of you.