Eventually, ponies were drawn to Twilight’s screaming. They found her still chained to the floor, with Rarity unconscious in front of her. Rarity had a cracked skull, but, eventually made a full recovery.

They found the kill shed out in the Everfree. It was animals, mostly.

They cured Rarity with the power of the Tree of Harmony, and drove the dark magic from her mind. She cried, and begged forgiveness from her friends and victims alike. In time, she received it. Ponies are compassionate creatures, and generally not inclined to hold grudges.

The world moved on. Rarity got something of her life back together. She even salvaged some of her reputation. She could go to her own home, and again sleep in her own bed.

Visions would come to her in the night. She saw beautiful things. She saw dresses, and devices, roads and railcars, the cures for diseases and beautiful poetry.

But she had a lot of work to do in the morning.

She smothered them all to death, and went back to sleep.