Hi there,
I wouldn't worry too much about her daily milk intake. First, cheese has a much higher density of protein and calcium (and fat) than plain milk. Also, recent research is starting to show that forcing our children to drink a certain amount of milk every day is not as necessary to their health and growth as it was once thought. What matters most is that growing kids get a good variety of different healthful foods, particularly foods that contain protein (chicken, tofu, beans), calcium (cheese, broccoli, collard greens) and antioxidants (fruits and veggies), as well as plenty of water to drink.
Milk has long been thought of as a healthy drink, however it is more accurately described as a drinkable food. It is relatively high in sodium, and does not provide good hydration the way water or even juice does. Many kids have no interest in drinking cow's milk, yet are very healthy and strong, getting calcium from various other food sources.
Over the last few decades, the Dairy Industry did an excellent job of promoting their star product - milk - as essential to children's health. Now, however, with concern about high-sodium and high-fat diets, as well as the prevalence of milk-allergies and their related health problems, and concern over the artificial hormones and antibiotics frequently added to dairy and meat products, many are questioning the wisdom of forcing their children to drink milk every day.
I think as parents we need to look at the bottom line: how healthy and well-nourished are our children? If your daughter is thriving and growing and healthy despite not drinking milk every day, she is probably fine. However, it might not be a bad idea to consult your child's pediatrician, or a nutritionist, about making sure that your daughter is getting the right balance and quantity of nutrients. They can also give you ideas for good sources of calcium (other than milk) that your daughter might prefer. The last thing you need is for every meal to become a hassle!
Good luck!