Dean smiles faintly. "I haven't seen you like that, yet," he says, but it's true that he has yet to see her tactics in battle. That first hollow years ago is the only real fight they've ever shared, and Dean had known next to nothing of her world, then.

He drops his gaze to study the long gash streaking up her arm. He'd fallen into a frozen lake when he was young - Dean doesn't need to be told how deadly the cold can be, but still..."I never thought of it as a weapon before. How long did it take to learn her name?"