“‘You have a traitor there, Aslan,’ said the Witch. Of course everyone present knew that she meant Edmund. But Edmund had got past thinking of himself after all that he’d been through and after the talk he’d had that morning. He just went on looking at Aslan. It didn’t seem to matter what the Witch said.”
~C.S. Lewis; The Lion, the Witch and the Wardrobe
I’m guessing that many of the readers here have read The Chronicles of Narnia and therefore know the context of this quote. The White Witch comes to demand Edmund’s life from Aslan. As stated, Edmund is a traitor and as such, by rights, his blood belongs to the Witch. The night before the Witch’s audience with Aslan, Edmund had been rescued from almost being murdered by the Witch, and that morning had a conversation with Aslan that “no one ever heard…[but] Edmund never forgot”.