Since your daughter is drinking some milk, it is safe to say that she probably is lactose intolerant rather than allergic to milk protein.
The Recommended Dietary Allowance (RDA) of calcium for children age one to 10 is 800 milligrams per day. This amount of calcium equals two and one-half cups of fluid milk, milk pudding or custard, four ounces of hard cheese, four and one-third cups of ice cream or five cups of cottage cheese.
Call your daughter’s doctor about continuing the calcium supplement. Unless she drinks more milk, she needs to continue the calcium-vitamin D supplement. Her doctor can suggest an appropriate calcium supplement.
By the way, current recommendations are to breastfeed or to formula feed infants until they are 12 months of age. The protein in cow’s milk, casein, is difficult for infants to digest and forms large curds in their stomachs. Also, babies fed cow’s milk before one year of age are more likely to develop a milk protein allergy, especially if either parent has a milk protein allergy.