“The Night Will Last Forever!” Nightmare Moon finished, and dramatic thunder crashed.
Then it cut off as suddenly as a knife, and a sky-blue alicorn trotted onto the stage from the left. “Mother!”
Nightmare Moon blinked, as things went abruptly off-script. “Pardon?”
“For goodness’ sake, mother,” the newcomer said, shaking her head wearily. “What are you doing?”
Some of the spectating Ponyville ponies noticed that her cutie mark incorporated a moon motif, alongside a wand. Twilight Sparkle, meanwhile, tried to avoid giggling.
“Who are you?” Nightmare Moon asked.
“And you don’t recognize your own daughter!” Trixie said, shaking her head and continuing to trot up to her ‘mother’. “You are drunk, mother. Come on, let’s get you home.”
“I am NOT drunk!” Nightmare Moon shouted. “I am the rightful ruler of Equestria, not some two-bit sot!”
“Hey!” Berry Punch shouted from the crowd, putting down her third beer of the night. “Sots are ponies too!”
“And now you’re going to make a scene.” Trixie’s voice had what Twilight judged as an artfully recreated hitch in it. “This happens every week. Is there somewhere I’m going wrong? Some filial duty that I’ve failed in?” A tear rolled down Trixie’s cheek.
Nightmare Moon was by this point completely confused.
https://www.fimfiction.net/story/98568/20/mlp-time-loops/mlp-loops-20