After Nightmare Night, Luna invites Twilight to tea, and they start spending more time together. Princess Celestia teases Luna about it sometimes.

Twilight Sparkle isn�t dead.

But she's not exactly alive either, and there�s only one pony who can see her, can hear her, can prove that Twilight still exists. Unfortunately for Twilight, or perhaps fortunately, that pony is a certain pink baker and party planner.

Image by Coyoterainbow. Link: http://fc05.deviantart.net/fs71/i/2011/233/a/f/good_life_by_coyoterainbow-d47eeub.jpg And no, I have not seen Ghost. Improved summary courtesy of Donny's Boy.

Equestria is a land of magic and harmony, a peaceful realm ruled by immortal and benevolent monarchs. At what cost is this possible?

Following the discovery of a strange and powerful device, Twilight Sparkle is whisked away to the edges of a land she thought she knew so well. Here, surrounded by ponies whose very existences have been kept secret, she must contend with vicious enemies, hostile allies, and the truth.

Chapters 1-16 edited by KiltedKey

One thousand years after Celestia banished her sister and crowned herself Empress, six mares are caught up in a swirl of intrigue and disaster. Each of them must decide who and what they stand for, because Luna is returning, and she is not Nightmare Moon.

It has been a year since the Element's failure, and Nightmare Moon has not been seen. The pressure is finally weighing down on Equestria's new Chancellor, Twilight Sparkle. She still struggles with the events of that fateful night - the night the moon made its permanent place in the sky. After one fateful encounter, though, the course of Equestrian history shifts yet again as she begins to truly see this Nightmare. And maybe, just maybe, she and Nightmare Moon aren't so different.

A MoonLight fic with a twist.
And a bit of Twixie.
Etc.
Art by nikohl: http://nikohl.deviantart.com/

Twilight loves her. She is the Princess, the beautiful, powerful, kind ruler of Equestria. But when the Princess denies her, Twilight vows to become stronger, to be better. Until one day, she will be so powerful that not even her mentor can ignore her any longer. One day, she would make Celestia love her back.

The equestrians have forgotten us, forgotten of those they once fought side by side with, lived and coexisted with. Those who they had once called brothers and sisters. I am here to remedy that, to bring back the forgotten histories of Equestria.

Part one: First contact

EDIT: The story has undergone a rewrite and I added a few new elements to the existing chapters. You may want to reread them ^^

Twilight Sparkle: magician, scholar, bearer of the element Magic, and most of all, friend.
A bat, a book, and a bite can change so much of that, and bring darkness to her heart.
Can you keep your friendships when you might hurt those around you?
If you want to hurt them?
Bloodlust can bring an end.

For almost a thousand years, the immortal Nightmare Moon has reigned over Equestria as Empress. To the average pony, Nightmare Moon is an overarching enigma whose rule is absolute and whose wrath is terrible. But to Twilight Sparkle, who as an orphan has never known her parents, the Empress is something else entirely. When the young unicorn is brought under the royal wing as an apprentice, she learns a great deal more about the supposed tyrant than she ever knew. But as Twilight is introduced to life with her new mentor, she is thrust into a world of political intrigue, conspiracies and secrets. Secrets that were never meant to be revealed. As allies and enemies plot against the very peace of the nation, will Twilight fall prey to the perils of her new position? Or will she prosper and find in Nightmare Moon the mother she never had?

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My eternal gratitude to my editor, LordOfTheWrongs, without whom Night's Favoured Child would not be the story it is today.

Now with added TVtropes!

In the magical land of Equestria, the night has lasted for a thousand years. But now, with the anniversary of Queen Luna's victory over her rebellious sister approaching, the Queen's most faithful student learns about a disturbing old prophecy. Can she, along with a hastily gathered group of allies, save the Land of Eternal Night from the dawn that Hellion Queen is trying to bring?

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This is an alternate-universe - or, to be absolutely precise, a reverse-universe fan-fic for MLP:FiM.
The cover image is a bit of fan art from DotRook over on dA: Dark Equestria: Rarity

Second (and final) chapter will be coming soon, once I polish it a bit.