It is not your job to make sure she eats. It is your job to offer her healthy food. My own children (now adults) sometimes tried to create a power struggle over food, but I never let them. Food should be fuel for the body and not a power struggle. I always offered healthy food, and I respected their right to choose not to eat sometimes. If they got hungry later, I was always happy to warm up the food they had chosen not to eat earlier. If they refused, I knew they were not hungry. They learned very quickly that there wouldn't be any other option. With my daycare children, I offer food. One of them will tell me she isn't hungry, but ask 20 minutes later for something else. Doesn't work. I really need mealtimes to be pleasant times, not times of stress for either me or the children. If they don't eat, they don't eat.