In my youth, I loved watching Disney films with cute little Brittish kids saying things like "Don't worry, Miss Price. No one's gonna peach on ya."
I developed quite the accent by memorizing and reciting film lines and would use it to entertain and deceive my friends. ["Would anyone like to play Pooh sticks? It's a little game we used to play in London where I was born."]
It would seem that Maggie has the same gift. Yesterday we were watching Peter Pan and I said "Look, it's Peter." And she said, "No, Mom, not Peter. Pee-ta!"