I don't have kids and don't know the first thing about potty training, but it kind of seems like knitting would help the process. I mean, it is kinda hard to go with someone right there watching you. It is also hard to learn something new with someone watching you. Potty training is going to the bathroom + learning something new, right? But if you are focused on your knitting, maybe she will relax a bit and things will go more smoothly?
Or maybe I can justify knitting for any situation, lol (funerals, sales meetings, timed typing test).