Fluttershy, Dark Magic [spooky]

There was something…off about this little creature from the Everfree. It wouldn't get along with any of the other animals in the cottage. It picked quarrels with Angel Bunny, harassed Mr. Bear constantly, and had trampled Hummingway's favorite flowers.
The little gray thing resembled a pony, but Fluttershy didn't know of any animal or pony anything like it. By the time Fluttershy did know what it was, it was too late for her. It was all over when she found that shard of crystal in her back yard. That's when the little gray pony-thing became a big gray pony-thing.
With a black mane.
And sharp teeth.
And a red horn.
It was too late for Fluttershy; there had been no one around to save her.
Just as there was no one to save Equestria.