Literature
Apple of Discord's Eye (Chapter 5)
Even after the unexpected disaster, the Gala was a spectacular hit. The dancing and celebrating continued full force, despite a fair share of worry over Princess Celestia, since she never did return to the party. Twilight and Cadence did their best to clear the tension, however, and everypony seemed to forget about the incident once the night sky shone with bright, burning fireworks (lit by Spike, of course).
However, if there was one pony who couldn’t seem to enjoy herself for the remainder of the night, it was Princess Luna. She wanted nothing more but to leave the Gala and find her sister, but she knew that if another princess left