I still think y'all are missing the point. She does want her food to be clean, but if water won't get it off (which is really how most people wash their vegetables), then whatever is on there that needs chemicals to get it off is something she doesn't want to eat. Water will get off almost everything (dirt, fertilizer, germs, et cetera); if she needs chemicals to clean her food, then there is something wrong with the food. It's overkill, I guess, to need chemicals to clean your food when water does just fine.
To me it's like getting sanitizer for way down in the depths of your toilet (past where you can see); why does that need to be germ free? Clean, yes, but germ free? What are you reaching down there with or to get that you need there to be no germs all the way down there?