Eight years ago Rainbow promised never to tell let anypony know she had a child, it was better for everyone that way. Even when that child moved to ponyville. Even when that child wanted to be her little sister. Everypony knows that chasing daylight always ends in heartbreak.

Thanks to ChudoJogurt for editing.

This was written off a prompt from someone who doesn't want to be associated with the story because of the opening scene. He gets exactly 6.9 percent of the credit.

This story is a sequel to The Lunar Apprentice

Celestia won. Her Royal Guards defeated Nightmare Moon and her army of rogue Lunar Guards. The Shadowbolts were driven underground, and the Lunar Apprentice is dead. And what has victory brought?

Hell.

The Elements of Harmony are separated and useless. The renegade forces of the New Lunar Republic are hidden in the shadows, free to move and strike at will. Confidence in Celestia's rule has been shaken throughout Equestria. Half the Royal Guard is out of commission, and the changeling army is on its way.

Every loose thread is being pulled on; it's only so long before the tapestry unravels.

Celestia may have won the battle, but she also unleashed the Night Terrors. And Equestria may not survive them.

Update 10/14/2015: Featured! Glad Night Terrors is proving to be as strong as its predecessor. A major thank you to all fans and followers!

Discord, for a master of chaos, was actually a very good planner. Despite the confidence that he would bring Equestria to its knees in mayhem, several millennia of experience had taught him to have a back-up, no matter what. And after watching from the sidelines as Princess Luna became Nightmare Moon, he knew he had found an ace in the hole. Despite his defeat, Discord's greatest trick was still to come.

You know what this means: Equestria's greatest Nightmare is back. And this time, she's not alone.

Edit: Featured 9-27-2013, first time I've had a featured story. Thanks to everyone who's stuck by this story in spite of admittedly slow updates!

The newly coronated Princess Twilight suffers an abrupt tragedy. Having lost two loved ones, she begins to question her own mortality, and that of her friends.

AJ, Dash, Rarity, Pinkie, Fluttershy. . . they are just the beginning. Twilight will live for thousands of years, so every pony she cares about—every pony she will ever care about, will die.

She could barely handle the pain of one funeral, let alone the thought of hundreds of them. Twilight finds a clever way to ensure all of her friends never die. They can’t all be ageless alicorns, but they can all move into Twilight’s Dollhouse. Then they can be best friends forever.

Sequel: Twilight's Dollhouse 2
Fanmade Song: Twilight's Dollhouse

Source: Dreampaw
Editor: Gage of Grandiloquence, Breath of Plagues
Pre-read & Idea pony: TypeWriterError,
v1.1 Revised chapters 1-10 on May 1st 2013
--Pending a few more revisions, including ch. 14
Now on TV Tropes.

Each night I’m trapped in the dark, immobilized. I hear whispers as they operate on me: they say I shouldn’t be alive. Twilight refuses to tell me about the operation. Sometimes she can’t look me in the eye. What did they do to me?

Nothing used to scare me: I kicked a dragon in the nose, defeated gods of chaos and hatred, and control the weather. Now I feel broken. My memories have shattered, I feel wrong, and I’m afraid to tell anypony how scared I am.

I can’t even do the rainboom anymore. Who am I? I’m no longer the best flyer in Equestria, yet everypony assures me I am. Why won’t they tell me the truth?
↓↓ Credits

Special Thanks:
Dreampaw the artist. Best cover art.
Editors:
ArgonMatrix - Fixed 128 errors in chapter one alone.
Animus - who is awesome and for hire.
BronyWriter - The only author to punch Celestia in the face, and live.
Jaestring - Artist, Editor, and Female all in one.
Abcron - European editor, which means his time zone and my actual sleep schedule are aligned perfectly!
The Parasprite. Need I say more?
Selbi - If your editor isn't German, you aren't trying hard enough.
OctaviaHarmony - His avatar is as sexy as his editing.
RenegadeTimelord - Doctor who?
Akumokagetsu - Awesomesauce.
(Wow, a lot of editors came and went.)