(SPOILERS IN STORY AND DESCRIPTION)
Wheatley is trying to get Chell to jump into the pit of nothingness, and she doesn't listen until Wheatley says a pony farm is down in the pit, so Chell jumps down and is teleported onto Applejack's farm. Not too long after, Wheatley begins to question himself what happened to Chell and POTaTOS. He ends up sending a turret named Annabelle (my character) into the pit to see what in the name of science is going on down there, when things take an unexpected twist...

Made Teen for swearing.
Edit 3/13/14:
Hey everyone! I'm going through the story and formatting now, and more chapters will be uploaded soon!
Hopefully people remember this fic...