For years, Luna has endured the guilt of Nightmare Moon and subjected herself to the nightmares of the Tantabus as punishment. When she lost control of it, her friends in Ponyville were able to stop it and things seemed all right for a time...

...but what about Celestia? What about Luna's closest friend, a pony who had no idea what was going on in her little sister's mind?

Twilight couldn't remember ever having seen Princess Celestia get sick. That simply doesn't happen to alicorns. And yet there she lies, on her bed, delirious. If only she knew how to help.

Lengthened version of the tenth-place finisher in the /fic/ mini write-off "One Little Mistake."

Cover art by Mica Halligan

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Now with a reading!

Thanks to Themaskedferret for feedback on the draft.

Finally, after years of begging, Celestia gives Twilight permission to access the Forbidden Wing of the Royal Library, a wing so secret even the other princesses can't access it. Twilight rushes to Canterlot, excited for the research potential.

Then she finds those books…

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