She is eating protein foods - milk, yogurt, pizza, peanut butter,
lentil soup, and cheese; plus fruits which are all healthy. Some children do start eat to a wider range of foods when they get older. To ‘broaden her tastes’ is to engage her in the kitchen more. Children love to be a part of making food. Have her help you with preparation of food and setting the table. Hopefully this will increase her interest in other types of food. The most important thing is to RELAX.