Orphan

It were the week before filly Pinkie Pie's Birthday. Little did they know that little Cheese Sandwich were on the way to Ponyville after a Birthday party tour across Manehattan. The sun were shining, and it were an early summer morning as filly Cheerilee and filly Pinkie Pie they invited their friends over to Pinkie Pie's Birthday. Cheerilee and Pinkie Pie crossed a forest that sunny spring morning, Pinkie Pie used to hold the biggest parties that Equestria ever had seen. There in the forest had the two little ponies been seeing something fast pass by them. It were not any animal. That looked like a hurt pony. The forest got very cold even if it were a hot spring morning.

"Hey, I wonder who you are." Pinkie Pie shouted to the quick pony.

"I hope you're not lost here." Cheerilee shouted to pony.

The sight of the running pony that stopped up startled the two ponies. That pony looked pale and drowned. The pale ghostly pony vomited. A lake laid in the forest, so it could come from there. It were not the first time that ponies had seen ghosts. Pinkie Pie and  Cheerilee heard that other tourist ponies in that forest ran away from the same ghost pony they now saw. The ghost vomited water up.

"Help me get out of here by telling me a fairytale about this forest." the ghost told the two ponies.

Cheerilee knew fairytales from her many books, as she wanted to be a teacher. So Cheerilee told the ghost a fairytale. Then the ghost vanished after hearing that tale. Later on after telling their parents about what they had seen in the forests, were Cheerilee and Pinkie Pie not being able to sleep.

"I had also seen ghosts in that forest when I was your age, and I helped ghosts away." Pinkie Pie's dad told the filly.

The 1980s arrived, and it were years after Pinkie Pie helped that ghost to where he belonged. Adult Pinkie Pie went to the library in Ponyville, and found a book about that haunted forest.

"In the 1970s a schizophrenic filly grew up in Phillydelphia, and he were last seen in a dark forest by Ponyville as an adult." Pinkie Pie read.

"That filly could not get any help after seeing ghosts, so he went out of Phillydelphia to see if others could help him stop seeing these things." the pony read.

So that were the cause of the ghost that haunted the forest of Ponyville. None had seen that ghost after Pinkie Pie and Cheerilee told it a fairytale.