She would tell every pony that she was fine. But Princess Luna was far from fine. Fighting madness and the truth all at once, she felt like she was going to crack. But this is her side of the story. Her constant battle for Saneness and peace of mind. The story of her struggle of keeping all this to herself because no pony would ever be able to help her. This is all the pain and anger and sadness while in Equestria and on the moon. But like all monsters, she didn't start out as one.