The corrupt Celestia and the ponies who stood against her faced each other with a fierce determination, both knowing that this would be one of their last standings. Every twitch of a muscle, every stary hair in the wind or ruffled feather was noted keenly as they stood in opposition.

Celestia charged, but a flash brought her up short as Trixie Lulamoon and Twilight Sparkle appeared before the two sides. The latter was ragged and tired, her fur matted with sweat and the smell of her exertion was quite apparent. Her eyes were ringed and her features drawn tight, as if exhausted or in pain.

"ENOUGH!"

Panting slightly, Twilight turned to face her former teacher.
"Celestia, this isn't you, you don't do things like this. Look deep inside and find that love you hold for us all. Reach insides and find the love you hold for me, your family, just as I have found the love for my own new family."
Twilight sighed happily, gesturing to the girls and the Night Corps. then to a bundle she held close.
"This is my baby, Celestia, and if I am truly a daughter to you, then this is your granddaughter. Can you not find it in your heart to loves us?"

Celestia stopped for a moment, eyeing Twilight and the pup pensively.
"My granddaughter...."

Twilight nodded hopefully.

The twisted alicorn suddenly began to roil, literally. Her the muscle under her skin seemed to ripple and pull and the alicorns eyes became wide and unfocused.

Knowing it to be safer, Twilight began to back away from Celestia, Trixie making a point to stay between Twilight and the foal and Celestia.

"Family....is a lie....but she's my granddaughter....abomination....love...death...kill....kill...stop please....KILL!"

Everypony stared as the alicorn began to argue with herself before everything stopped.

No noise.

No movement.

Nothing.

Then the twisted alicorn darted forward, intent on goring Twilight and her bundle. Trixie quickly erected a shield as the Elements burst into action. Eerypony watched in we as a rainbow burst of magic arced into the air and slammed down into the alicorn. As the light dissipated, they could faintly see a ball of light arc up into the sky towards the rising moon.

As soon as the Elements died down, Twilight fell heavily, but was caught swiftly by Telvanni.

"It's over..."

The lycan looked lovingly between his mate and his daughter.
"No...it is only just beginning. I love you Twilight, and I will never leave your side."

~^~Some Time Later~^~

Luna waited nervously in the clearing. She knew not what to expect, but she knew it would happen soon. Sure enough not five minutes later a flash of light slammed into the ground, cratering it. As the Lunar diarch neared, she spotted a small pink maned alicorn mare.

"Celly?"

The mare shifted and looked up before rushing to Luna.
"It is me, the real me! I've missed you so much Lulu!"

Luna nodded, tears stinging her eyes as she embraced her elder sister.

"Luna....how long has it been..."

Luna knew the question was coming, and had dreaded needing to answer it.

"Luna? Please...how long?"

Sighing and swallowing the growing lump in her throat Luna answered.
"1000 years Celestia."

"Then Twilight..."

Luna just nodded as the alicorn let out a heavy sob and began weeping.

"I failed her...I should have been here, but I failed her..."

Holding Celestia tight, Luna attempted to comfort her.
"We found the truth by the way. That you used magic to create Twilight...to birth her...illegal, yes, but nopony cared. Celestia, I can't pretend to know what it is like to lose your daughter and everypony you knew, but I can imagine what it is like to lose your son. But enough of that, there is something I need to show you."

With that Luna teleported in front of a large marble and gold gilded building.
"The Hall of Heroes. Everything public about Twilight's life and that of her daughter, and her daughter's daughter and so forth, is kept here."

There was another burst of magic as Celestia and Luna appeared in the castle archives.
"And on this aisle is where I've kept everything Twilight wanted you to see when you returned. There is a scroll for every week of her life after you left. she knew you would want to know. Finally there is this. It is a letter from Telvanni. Anyway, there is much to catch you up on bu-"

"Princess Luna! How fared your trip? Did you-" the voice trailed off quickly as its carrier realised who he looked upon. He quickly fell into a bow.

"Xander you may rise. Xander, this is my sister Princess Celestia. Celestia, allow me to introduce my faithful student, Prince Xander of the line Sparkle."

Celestia's eyes widened as she took in the sight. Xander appeared a lycan, but was shorter, even standing on his two legs, that Telvanni had been. Xander was also skinnier, not bone skinny, just less musculature. He wore a robe and had glasses adorning his face underneath his horn. Finally there was his coat. He was a darker purple than Twilight had been, but he had a star on his forehead that shared the pink streak Twilight had always had in her mane. He was also walking towards her with a smile.

"It is a true honour to meet you Princess Celestia. I...well, we all know Twilight's story of when Luna returned, and how Twilight was Luna's first friend. Luna told me that you would need to regain your power and become accustomed to the newer surroundings. I was wondering if you, and please forgive me if I am too forward, stay in Ponyville at the library with me while I help you adjust, and if you want, maybe be friends?" Xander offered with a hesitant smile.

Immediately Celestia knew there was no way that the lycan/unicorn hybrid could have been descended from anypony other than Twilight Sparkle. Tears glistening in her eyes, the alicorn's heart swelled with pride.
"It would be an honour to stay with you Xander, and please call me Tia."

Author's Note

Working on a brief one shot to expand on this specific ending. I'll be sure to let everypony know when I'm finished.