Why does an easily scared pony live at the edge of the Everfree Forest? What is she hiding as she surreptitiously leaves her house in the middle of the night?

And why does streamers and confetti sometimes appear in the middle of the Everfree?

This story was created for the March contest of the Monthly Contest Group.

If you find anything that could be improved, comment away! I'm in this contest to learn.
And please, if you must downvote, leave a comment (or send a PM) telling why. Without knowing where the flaws are I can't improve.