Some time ago you captured a girl, making her your "baby" submissive and obedient

Paige was wearing a baby sleeper, this one from Fluttershy, yellow and with a flower cutie-mark in The leg

Paige: But daddyy..! I wanted the Rainbow Dash one! She is cooler! she was carrying a large dirty diaper, which was being held by the buttons of her baby sleeper, almost ready to unbutton