Try a reward system, like a marble in a jar every time she uses the potty, and when the jar is full she get... X (trip to a place she likes, a small toy, whatever). Then the jar gets emptied and she can fill it again. My dd preferred cold hard cash so we use quarters. She learned a lot of math counting her money over and over too.
Also take her to a pediatric urologist. Our dd has trouble with wetting and also constipation/poo accidents (apparently these are related). She ended up having training sessions to teach her to relax down there (the opposite of kiegel exercises).
We found mural ax doesn't help but watermelon first thing in the am helps some and generally a high fiber low acid diet.
anthropologist mom to O
(12-30-04) and R
(4-22-10) Married to my best friend