Scootaloo didn't think. She just ran when she saw the terrible, faceless pony. She didn't know where her friends went. Her only thought was 'AAAAAHHH!!' as she fled.
It was just after sunset. Scootaloo, Sweetie Bell, and Apple Bloom had all gotten lost in the Garden Maze during their class trip. They were more afraid they'd not be found until the next day, at least until IT showed up.
She could describe it fairly well- a tall, paper white, slender pony in a black suite with a red tie. It had no mane, no eyes, mouth, or anything. Just looking at it had filled her eyes and ears with static, and gave her a terrible headache.
Scootaloo slowed down and looked behind her. The freakishly tall pony wasn't there- but neither were her friends. She thought about calling out to them, but it would also give away her position to the white pony.
Giving a sigh, Scootaloo continued down the path she'd been running on. Several twists and turns later, she came upon a small dead end circle, with a dead tree in the center. Pinned to the tree was a small piece of paper. Scootaloo took a closer look, and saw that it was a crude sketch of the creepy pony, and a bunch of pine trees. Something told her it was important, so she took the paper down from the tree and put it in her schoolbag. She barely noticed as a low base beat began to resonate from all directions around her.
Continuing on her way, she doubled back and came to a small statue. It was so weathered down, it was unrecognisable, though it vaguely resembled a pegasus. Another paper lay at the foot of the statue, which was absolutely covered in scrawling letters, reading "NO" over and over again. She stowed this paper in her bag with the other. Now she'd found two. How many more, she didn't know.
She turned to her left to go down that direction, and her heart skipped a beat when the faceless pony stood there, motionless. Screaming, she ran down the opposite direction, using her small wing sto propel her foreward. She didn't stop running until she ran out of breath and her sides were in stitches. She found herself in front of a small fountain, trickling water down in cracked spots. There was another paper at the top, untouched by the water. Scootaloo check behind herself to see if she was still being pursued, and was releived to find that the mysterious pony was no longer there. She scaled the fountain, leaving her schoolbag at it's base. She reached up and grabbed the note, which read simply "HELP ME" in hasty, barely readable equestrian. She turned back to her bag to put it with the others.
The mysterious pony stood inches before her, tendrils of darkness writhing behind it, flowing out of it's back. Scootaloo screamed, fell flailing into the fountain, and was silence by the Slender Mare.