[Oh wait, he's playing games again, isn't he? Either that, or yet another trying to convince her that undoing one's past was a fool's errand.]

The Throne of Britain. You came to me after Uther had died and revealed the truth of my birth, and that the people would recognise me as the rightful heir if I kept my sex a secret and drew Caliburn from the ceremonial stone. That only I could quell the chaos following the death of the king.

[Fixes him with a hard stare, emotions roiling underneath.]

But you were wrong. It should have been another who became king in my stead. I failed to even save the people and the only way to undo that mistake is through the Grail. You cannot convince me that it is blasphemous, it is the only duty to Britain that I can fulfil.