Adelle was absolutely bursting, and yet suddenly she couldn't. Not with Christina watching. It was humiliating, far more than anything else. She went bright red. "I... I can't, suddenly." She tried pushing down with her belly muscles but nothing worked. "Help?" She squeaked. "I want you to watch me, I want to pee, and I love that I can't while your watching!"<br/><br/>Adelle smiled stupidly up at her sister. Her bladder was bursting and yet her pee just wouldn't come.