It's very common that domestic helpers misunderstand the recipes and cook with incorrect ingredients, especially when they have to prepare Chinese soup with dried herbs, plants or vegetables.
That's why to be safe, I demonstrate the dishes before I ask my domestic helper to cook them. For the soup, if I don't have a chance to do so, I prepare the dried ingredients for them, and show them photos (using search engines) of the other ingredients before she goes to the market.