This story is a sequel to Celestia's Tiny Student

(Title changed from "Ponyville's Tiny Librarian" for reason pointed in this blog )

Twilight Sparkle is a one-kilogram pony the size of a large rat, shrunken by Princess Celestia following her entrance exam to the Celestia’s School for Gifted Unicorns to ensure that her power surges would not pose a danger to the ponies around her.

She’s spent thirteen years full of hard training at her new size, facing the life-threatening experiences that came with living in a world of giants. To survive those thirteen years of hardship and joy, of learning and adventure, and of pride and humility, Twilight has challenged herself to be stronger, to overcome any obstacle.

Now that tiny Twilight is on her way to Ponyville to oversee the preparations for the Summer Sun Celebration, how well will this miniature mare fare outside of the confines of the castle? How will the other Element Bearers react to her? How will Nightmare Moon react to the tiny unicorn? Is Twiny prepared to face Ponyville, and, more importantly, is Ponyville prepared to face her?

Credits:
Art cover - kc day

Top editors: (editing and rewritting for months, hope quality is to your liking).
Kydois
Georg

Nightmare Moon's sentences editor:
Bahatumay

Applejack accent editor:
Crimson Star (Chapter 1 - Applejack)
Rebel Brony
The Notebook is grounded

Pinkie sentence's editor:
Plump it UP

Other editors:
Hereward
tana1100
Lab (small editing from prologue to chapter 4)

Pre-reader:
Rated Ponystar

To celebrate the release of this sequel, I created a group called “Twinyverse” for all fans of this story where you can talk about it and track all side stories with ease.
The Twinyverse Group

Years have past since the changelings were driven away from Equestria, giving room for peace and love. Suddenly, Twilight is captured in the middle of the night, and is brought to the hooves of Queen Chrysalis. Seeing that she has captured the element of magic, she is determined to gain her revenge against both Twilight and anyone that has ever wronged her.

Using her dark magic, the queen transforms the unicorn into a horrifying creature. Will Twilight hold on to her sanity, and more importantly, her devotion to friends?

Or will she slip into the darkness, and lose all hope.

Props to chaos2012 for bringing me this idea. The story is mine though

Evilpresident is also onboard as a Pre-reader.

Okay, new cover art! This time it was actually made for the fic, so credit goes to BronyInvestigator
I cannot thank him enough.

The past always comes back to haunt the present, there is no escaping the inevitable. For decades, Celestia has kept a secret from her student. A secret she made out of pain, and through pain will be revealed for all to see; for Twilight Sparkle is the secret daughter of the Sun.

Now, there will be consequences.

Consequences, they come in all shapes and sizes for every decision. For every action there is an equal and opposite reaction. These words are lessons that Princess Celestia should know, bits of wisdom she practices in her rule of Equestria. How is it then, that when faced with a decision, she chooses the one that would inevitably bring the most pain? How is it that she couldn’t bear being recognized as the mother of her child? And why? Twilight Sparkle is about to find out.

Disclaimer: (I do not own the picture; Title Picture owned and designed by KitsuneHino; Source: http://mel-rosey.deviantart.com/art/By-my-side-364777307) (I do not own any of the characters, places, events, etc. outlined in this fanfiction, MLP FiM does under Hasbro, give them the credit.)

This story is a sequel to Celestia's New Assistant

He makes Discord look sane. Most ponies resent him. He is the most chaotic thing to ever live.

Will he save Equestria? Will he doom it? Will Citrus Fruit be involved? More then Likely. Beware, he is...The Human.

"I simultaneously want to know what's going through your head when writing this, and don't want to know what could inspire this." -Love the Changeling

"MOST. RANDOM. STORY. EVER." -jackofalltradez

"I mean... stare too long into the abyss and the abyss stares into you, and the abyss has skittles apparently" -ShadowsAndDust

On top of her universal magical talent, teleportation was Twilight's specialty. With her newfound Alicorn power, even vast distances would be within her reach. She was so certain that there was nowhere they would find themselves other than their destination, she even offered to teleport herself and Celestia all the way to the Crystal Empire, together.

Of course, nowhere is exactly where they find themselves.

For a week.

(Oneshotober 2014)

It had been about a month since the changeling incident in Canterlot. Everypony is on edge, because stray changelings keep popping up here and there, trying to blend in with the population. Everyone worries that one of their closest friends, or even their family, could not be who they appear to be. But what happens when a pony isn't really that pony...

...but they're not a changeling, either?

It had been nearly a year since you won that labor lottery. This job had quickly turned into the best thing that has ever happened to you and your family. From the Grestin checkpoint, you had seen it all; terrorist attacks, long-seperated lovers getting back together, people trying to smuggle drugs into the country...
None of that compares to the day a portal opens to an alternate dimension just outside the walls.
Which is bad, because inevitably that means more papers for you to check and double check.
But still, a job's a job. Might as well keep a straight face about it...
And remember:
Glory to Arstotzka.

Mis-communication has started many a war, but in this case maybe calling it a war was too generous.

The "war" is over, Twilight has successfully orchestrated a bloodless end to the Griffons' aggression, but only now does she realize that there is more to winning than she had first assumed, especially against a nation that holds war as a central part of their culture...

Now Twilight must deal with the aftermath while facing a challenge she never anticipated: being seen as a conqueror.

This can be read alone, but I recommend reading the letter that started it all for a chuckle and a little exposition. This series of expositional one-shots can also give some additional world-building.

In response to threats of a griffon attack on Equestria, Twilight responds with a letter detailing just why such actions would prove unfavorable for them.

Dear Princess Celestia, this is easy!

Join Twilight Sparkle and her friends as they easily defeat every challenge thrown at them with their awesome friendship powers.

Based on this story:
My Little Pony: Friendship is Overpowered (Equestria Girls)
My Little Pony: Friendship is Overpowered (Season 5)