It's fine to feed your child if she's hungry.
She probably won't feel much like eating, but when her appetite returns, you can give her most of what she normally eats. Doctors now believe that the traditional BRAT diet (bananas, rice, applesauce, and toast) doesn't give kids enough protein or calories. Steer clear of high-fat foods like chicken fingers and ice cream, which are harder to digest and may be more likely to be thrown up. Also avoid spicy foods and fruit juices, which can irritate the gut or cause bloating.