Child of Narnia

After their second return from Narnia a terrible sickness befalls Susan. No doctor can help her, they can't even figure out what she's suffering from. The only hope for Susan is Narnia. But will she get better once she is cured? Or will the loss of Narnia destroy her in the end? Just something I came up with over the time, slight Suspian, a little dark at times hence the raiting.