"If you're going to wear pretty little girl dresses Sissy, then I'm going to treat you like a pretty little girl! And little girls never go to the potty without a grown up to make sure they're alright!
"But....please....I can't....not with you here....."
"Well if you can't....I guess I could always put you in diapers...."
"Oh please no....please..."
"I'm getting tired of waiting Sissy!"
Hiding her face in shame Sissy relaxed and let go.......