“Maud has little patience, or restraint, for the things that take away the smile from her dear sister.”
“This is a scene from chapter 3 of my fanfic showing how Pinkie came to live with the Cakes. Maud stops by to check up on her sister and see what kind of people are caring for her, so they go out for the day, leading to the scene above.
How a Pie Became a Cake
After the rousing success of her first party, bringing joy to her parents and sisters, Pinkie Pie left her home to teach that joy to others. On her first day in Ponyville she stumbles across a struggling Sugarcube Corner, and resolves to help out the business.