I do not own Equestria Girls or Twilight Sparkle/Sci Twi. But I do own Star Flash and this story
https://starman1999.deviantart.com/art/Twilight-posing-in-her-New-long-skirt-740536574 (This is outfit Twilight's wears in the story)
Twilight's Prank Day.
Twilight is a doing her first babysitting job today. It's 6'clock and Twilight is standing in front of door inside in the house as Star Flash parents are about leave to visit his grandmother. Star's mother is talking Twilight what she needs to do a stuff.
“So Twilight. You know what to do now.” Said Mrs Flash.
“No problem Mrs Flash. I got this, I love do something new. I am sure Star and I with get long fine.” Twilight said smiling.
“Okay. If are sure Twilight, we will back at 9. Please make sure that Star is in bed be 8.” Said Mrs Flash
“Of course. Bye” She closes the front as Mrs Flash left. Then she pulls out a list out of her backpack. “Hmm” As she looks at the list.