Part 3 -
Sunday night they play together with a bag of diapers which they help each other putting on and coercing each other to piss in their diapers.
Monday afternoon comes and they walk home. She changes out of her school uniform and wet panty and goes to say hello to her mum, who is suffering from constipation, and the girl unexpectedly pisses herself again
earning her a slap from her mum.