Hi S.---YOur daughter's body is trying to tell you something. Cows milk is NOT a healthy food for humans. Please go to www.pcrm.org and put dairy in the search box. YOu can also read interesting info at www.notmilk.com. I also work with a healthcare professional, read her advice at www.DrFood.org.
If your daughter is eating a balanced diet with lots of fruits and veggies, she is getting most of the nutrients she needs. I personally feel that the good grown today does not have the nutrient density it once had...or that is needed for optimal health and disease prevention. So I do recommend supplementing with a WHOLE FOOD BASED product.
There is lots more ABSORBABLE calcium in broccoli, spinach, bok choy and sesame seeds (eat hummus...chick peas and tahini, which is ground sesame seeds). Water should be her beverage of choice. You can try other plant milks to use for cooking and cereals...rice, almond, hemp, oat and coconut. These, along with soy, are all fortified.
I have some great charts with fruit and veggie serving size recommendations, along with lots of other helpful info that you can use to offer your family the nutrition needed for optimal health. Feel free to contact me at any time. It is my passion to help reverse this trend of younger and younger people getting diseases that were once only gotten by the elderly. We are in trouble, and it's mostly because we do not eat enough WHOLE FOOD. I look forward to hearing from you. Good luck, D.