It is very possible to have candida on the skin only with no other symptoms; sometimes this is the only form of candida regular western doctors know about. I believe most doctors would prescribe Gentian Violet as something to apply to the skin to deal with it.
But there are alternatives such as castor oil, and applying undeceonic acid SF722 topically.
I have no idea how to help your daughter; I am sure able has some ideas on how to treat skin related candida.
Have you gone to any western or naturopathic doctors?