She has to pee

Then while Sarah brought her bowl to the kitchen the feared moment arrived.

In her bladder she felt the need to pee arise. What was just a no pressure decision suddenly became reality. There was no more postponing. She had to pee right now, which meant she would either have to decide to go to the bathroom, or do it here as she sat.

She contemplated for a few minutes. She had already come this far today, and she really did feel like she was making progress again. It was actually the most fun she had so far. Why not have faith in Sarah and continue?

But on the other side this was a new level. This wasn't just mud or spaghetti. This was literally pissing herself. It was something she'd never done before. At least not willingly.