Her classmates are doing the same thing?

I can certainly appreciate your not wanting your living quarters damaged, those security deposits are a pretty penny, I know mine certainly is. How about an egg timer to get her into a routine of getting her into the bathroom, while she stays with you? And I was a little younger than her when I learned about kegels care of a bike accident and subsequent surgery and hospitalization. I needed to learn how to control my bladder function at such a young age. She might benefit?