This story is a sequel to Petriculture

It's been several months since Pinkie Pie made a stunning admission about her past that permanently changed her relationship with her friends, particularly Twilight Sparkle, but life seems to have settled back to normal (well, normal by Pinkie Pie's standards, at least). However, when an old nemesis returns and ensnares Twilight in her influence, it's up to Pinkie to make things right.

This is the second story in The Petriculture Cycle. There is a TV Tropes Page for the entire Cycle here.

Cover image by Page Turner; "Princess Twilight" vector by Nianara.

Princess Luna, otherwise known as Princess of the Night, realizes, on one starry night, of her pitiful life. With no friends to turn to, she thinks only of the one pony who ever showed her the tiniest bit of friendship. Not those who feared her, or those who pampered her just because she was a princess. But a true friend, by the name of Twilight Sparkle.

Also, someone actually did a dramatic reading of this fiction. Here it is.
http://www.youtube.com/watch?v=dFBrkDCDWX4

Applebloom stood on the platform, watching as the train pulled to a stop. It was one of the newer stations, installed by order of Celestia a few years ago. It still had that new train station smell, which is much like new horseshoe smell only with a great deal more coal. It must at this point be said that there was nothing wholly remarkable about the train station, or for that matter its rather cheerily painted trains. But at exactly one in the afternoon something wholly remarkable was set to occur.
She felt the weight of the one way ticket in her bag.
"All Aboard," called the porter.

Into the Everfree we go.

Twilight and Dash, upon discovering that the long awaited "Daring Doo 4" movie contains, eugh, Humans, decide to rent out A Nightmare Moon on Elm Street.

Of course all their friends are invited. There is absolutely no way any shenanigans could possibly ensue.

None.

Golden Bracer, a Lieutenant of Celestia's Royal Guard, has desires that somewould declare shameful, perhaps even indecent. One day, however, these desires find him invited into Princess Celestia's own private quarters. With his honor as a guardspony on the line, Golden Bracer can only hope to keep his secret safe.

Twilight receives an urgent message from the Princess to meet her, but it comes with something she didn't expect... a bouquet of flowers. With nothing but the words "It's very important!", Twilight sets off for Canterlot.

Spanish Translation by SPANIARD KIWI: https://www.deviantart.com/spaniard-kiwi/art/La-reina-y-la-pupila-1000351296

It's been a month since Nightmare Moon's passing and Luna has retaken her rightful throne. Her transition is marred by a small problem: she's fallen in love with Celestia.

After her complete defeat at the royal wedding, Celestia's ego is shattered. Luna promises to whip her sister back into shape, because it'll take far more than a few laps around the palace to put a grown alicorn at the top of her game. But, with Celestia coming home each day with a new set of bruises and a slightly more forward royal attitude, her subjects begin to fear her more than love her. Is Luna's

special training turning her into a monster, or is it all according to some greater plan? It's time for some tough love!

(Warning: Dark tag for some Celestia abuse.)
(Featured 6/19/2012! :D)

A single changeling is cut off from the swarm during the attack on Canterlot. She's discovered by Vinyl Scratch and adopted as a pet. How will Wubsy the changeling, Vinyl, and Octavia cope when the town develops Changeling-phobia? Will Wubsy ever be able to prove her good intentions and stay with the mare she's grown so attached to? Rated Teen for off-page lesbian pony make-out session.

My bid to make "Wubsy" a more official part of the fannon. Check the source of the fic image to see the comic that started it all.

A gracious thank you to GarlicParsnip, Comma-Kazie, Chengar Qordath, JJ GingerHooves and Steel Resolve who proofread and co-authored the piece.

It's been a few weeks since Luna's returned from the moon, and all is not well. She's become more introverted than ever, rarely leaving her room and obsessing over work. Celestia hopes that studying Twilight Sparkle's Friendship Reports will at least help her get out of her shell, though an unusually talkative servant may just help in that regard...and is anypony else getting strange feelings from that statue out in the gardens?

As of May 4th, now featured on Equestria Daily. *Squee*