What does someone like Twilight Sparkle do when they need an editor for their writing?

Simple, they turn to magic instead.

A metafictional horror

Runner up in the Dreams contest for the Quills and Sofas Speedwriting Group.
This was originally written in an hour. This version has received some slight refinement. A big thanks to all who preread in the contest.
CW: Description of a suicide, depiction of a murder