In this story, Cozy Glow wakes up after being thrown into Tartatus, then being brought back by "Grogar" and finally becoming a stone statue with Chrysalis and Tirek...or she thought it happened.
When Twilight Sparkle appears nearby Cozy, a little pegasus is terrified and remorseful, but headmare quickly fills her in on everything that happened during and after the moment Tirek fled Tartarus, almost wiped out all the magic from Equestria and even almost killed Cozy. She also knows from Princess Luna that Cozy had nightmares of being thrown to Tartarus and then turned to stone.
But there are some things Twilight wants to know about Cozy.

Cozy Glow is released from her stone prison. Now she has to start down the long road of reformation, even if in a way she’s already begun that process while in exile. But at least she has a companion that understands what she’s been through. She’s still got a lot of apologies to make though. 

Written for the Cozy Glow Short Story Contest Written for the prompt: They’d set her free. They’d told her she deserved another chance. She didn’t know what being reformed meant, though, in a world where the heroes crushed the wrong-doers with overwhelming force.

If you could peer into the future, and see the exact cause, and time of your demise, how would that change your life? What if you saw the future and learned that that day was today? That's the dilemma Cozy Glow is faced with in this alternative version of the Ending of the End. In a dark twist, she uses Discord's chaos magic to take a peek into the future, and catches an early glimpse of her devastating defeat. Is there a way to prevent this horrible future from coming to fruition? Or is Cozy destined to an eternity of suffering? What does it take to make the change?

My second entry for the Cozy Glow Short Story Contest

Prompt: Cozy’s got a secret! Whether or not it’s hers is for her to know and you to find out.

This story is a sequel to A Different Kind of Ending

This is a sequel to both My Boyfriend Pip, and A Different Kind of Ending. The two stories share continuity with this story.

Twilight Sparkle has been put in charge of watching over Cozy Glow, who now permanently possesses the power of Grogar's magic. Twilight is determined to prove that there is no foe irredeemable, so she decides to show Cozy the wonders of magic, and offers her a chance to show off her magical prowess. However, so much time has passed since Cozy was a regular member of society, that reintegrating into the normal life might prove challenging, and may not be possible. At least not without the help of somepony who's gone through something similar. Meanwhile, Twilight must come to terms with her new role as Princess Celestia and Princess Luna's successor.

Castling is a special move in chess involving one of the player’s rooks and the player’s king. The move consists of moving the king two squares towards a rook on the player's first rank, then moving the rook to the square over which the king crossed. After this move, the king and the rook end up just next to one another.

And thanks to a friend’s kindness, a certain calculating, chess master filly would have a chance to end up closer to her princess than she ever thought. But can a filly like her truly leave her past behind to find another way? Can you learn to trust another when manipulation is your destiny?
Can a chess player like Cozy Glow learn to be a pawn?

This story is a sequel to The Once and the Future Princess

As of late, things have changed for Cozy Glow. She is not a prisoner any longer, but Princess Twilight's personal student together with Flurry Heart. She is not alone anymore, but she has made friends with plenty of ponies and become a valued friend in turn. She even has a special somepony! 

Now she is ready to, for the first time in her life, be a normal filly. She will explore the world, learn and grow together with her friends and her mentor.

These are the ordinary days in the life of one of the most extraordinary ponies in Equestria.

This is an anthology series made up of one- and two-shots. Chronologically, this is set after "The Once and Future Princess", but before the Epilogue of that story. Reading the sequel should not be necessary to enjoy these stories by themselves, but it will provide the background for these stories.

Cover art by (who else) the magnanimous Vito, who is also on DeviantArt.

This story is a sequel to Castling Cozy Glow

For one day, Cozy Glow was a Princess, and she has vowed to become one again as Twilight's personal student. It may take time and it may not be pleasant, but she is a headstrong filly who never gives up, no matter who or what comes in her way.

Having been born an alicorn, Flurry Heart is destined to become a Princess one day. Such a burden is heavy for a filly, and it is imperative that she learns to carry it. Fortunately, Twilight Sparkle has agreed to teach her and help her grow. With her unending kindness and bright optimism, Flurry is sure to succeed.

One filly who lost everything, and another who was born with everything. But even that's not all. There is a colt too, and whether he realizes it or not, his actions will have consequences.

Can Cozy Glow and Flurry Heart learn to become friends and help one another grow, or are there some gaps that not even the magic of friendship can bridge?

The cover art and proofreading was done by the amazing Vito, who is also on Deviantart.