Look, this is simply how the stories go. Every sun god has their shadow, every bright chosen savior has their whispering soothsayer, every young hero has their voice of cynicism that points out the darker path.

Susan does not regret her choice to be that voice, and she knows Edmund does not regret his efforts to help her balance Peter and Lucy's brightness, but she thinks nevertheless she and her brother both look for ways to compensate - the art, the music, the laughter and the wine - their own means of light.