Jitterbug

Looking for a story, it had a college aged bedwetting girl who was going to her aunt's for a period of time because her parents were going on a business trip or something. The mother tells the aunt who mentions to her daughter that this girl is staying with them and she gets the bed. The daughter can't believe it and tries to get revenge on her cousin after she mocked her for wanting her to play with dolls when she was younger. The aunt and her daughter also go to the store to buy pull ups but the daughter convinces her to get diapers instead since she's babysat before and knows that they are less prone to leaks. Also can't remember what platform it was on If anyone knows this story then please link it. Thank you.