as you will have paid for adult DDP for ur daughter, she is entitled to order from the adult menu, however if she decided she would rather order from kids menu, you are allowed to do that, it just doesnt work out best value for money considering what you have paid for the DDP and the value of the meals she may end up eating if she orders from the kids, so best to encourage her to order from adult menu.
remember that most things that come with fancy sauces etc can be served plain without sauce, sub sides for plain mash etc etc, so if ur DD Is fussy, there will be no problem accommodating that