Not that it would interest anyone...
Memoria
So this little story was more of a niggling thought. Even though no one seen the season finale, what if Starlight Glimmer's spell to affect time had more serious effect?
Add in an old idea about a group trying to keep one step ahead of a Queen, Memoria was that outcome. Admittedly I could have used Rainbow Dash for the head-strong and rash prisoner in the beginning here, but Luna seemed a better fit.