Hi C.---Is her yeast infection internal or on the skin? If on the skin, you would treat it much like 'jock itch' with topical creams. Be sure she is wiping properly to prevent spreading bacteria from one area to the other. You would then need to make sure the area is kept dry to prevent further trouble.
If it is a vaginal infection, you might want to look at her diet in order to help recover from this and then to prevent it in the future. Sugar is one of the biggest offenders when it comes to vaginal yeast infections. So make sure she is not getting alot in the way of candy or any other simple carbohydrate (cookies, cakes, etc.). Do try to get her to eat more probiotic rich foods. I normally do not recommend yogurt, but you may have luck with that. Goats milk or soy yogurts would be best, as cows milk can be highly allergenic and cause more problems in the end. Please check out www.strongbones.org for info on the dangers of cows milk for humans, particularly children. Having said that, it may be necessary for a short time to help balance the bacteria in her gut. Fermented foods, such as sauerkraut, are good for reestablishing normal bacteria balance as well. My healing foods book also suggests to eat lots of dark green and yellow veggies. Vitamin A helps to maintain healthy mucous membranes that are resistant to infection. Peas, beans and lentils provide magnesium and zinc, also helpful for avoiding these infections. Garlic also helps to stop the growth of candida.
If I can be of any further help, please feel free to contact me. Good luck and be strong. She'll be better soon. In health, D. ###-###-####