I think you are asking about Chefs de France, which offers a prix fixe menu, but it is an a la carte restaurant, so you can order one 3-course menu and share with your daughter.
However, just to avoid confusion, restaurants that have do not have an a la carte option and only offer fixed price meals, you pay per person, your daughter would be charged the child price, of course. The ones that come to mind are: buffets, character meals, BoG's dinner, dinner packages (such as Fantasmic), and dinners with shows (such as Hoop Dee Doo).