((Kinda creepypasta ish))

((Photo is what the mare looks like))

There's always this one rule that everypony in ponyvill has. It's to always lock the doors at night.

Because Every night between 2-3 am a mysterious mare walks throughout the town.
She always sings a song to replace the quiet and the sound of her hoofs clacking on the ground.
No pony ever wakes up, no pony ever unlocks their doors and say "shut up I'm trying to sleep", nothing.
No pony does a thing.

Until one night a young stallion and his father woke up by the mares singing. Usually they both sleep through it,
The stallion started to grow angry by the singing, he just wants sleep.
The foal wondered into his father's room and asked him when the singing will stop.
He had enough and told the foal to stay in his room and wait till he comes back, the foal did as he was told and the stallion walked out of his home to give the mare a piece of his mind.

He sees the mares silhouette wondering about singing her song again like she was a broken record.
He yelled over the mares song to catch her attention and she turned to look at him, her horn glew a bright cyan that lit up the dark.
he can now see her clearly.

Her whole body was covered in stitches and different colors of fur stitched to diffrent places on her body, her eyes where a dull and souless purple almost fake looking, a patch was sewn on her flank, it was a question mark with a crossed out heart for the dot as if it resembles her cutie mark,
Purple bows with green eyeballs on them was tied to her pink Mane and tail, and finally her mane and tail was thick and stringy like it was yarn instead of hair.

The stallion froze in fear, she wasn't the prettiest pony or even the kindest looking. The mare let's out a loud angry scream and the stallion tried to run, he was a earth pony he can't use magic against her or fly away. She then teleports in front of him and she lunges at him.

Screams from the mare and the stallion rang through the town then the screaming was replaced with silence, the foal was wondering where his father went and left the house to look for his father.

The sun started to rise and the little foal found his father's corpse at sugarcube corner.
His body all mangled and shredded, his eyes where gone and his cutie mark was cut off.

This is why no pony ever comes out at night to confront the mare with the mystery cutie mark.