She could try virgin coconut oil topically.
http://www.ncbi.nlm.nih.gov/pubmed/17651080
There are also some claims that taking internally works but I am not sure there is adequate science to back that up.
http://www.candida-health.com/coconut-oil.html
It is a healthy food, so it should be okay to try. I have read that, in order to avoid die-off symptoms and possible gastro-symptoms, you should start with a couple of teaspoons and slowly work up to 4 tablespoons a day.
Laura Spitzfaden, LLLL, IBCLC
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