Hi J.,
I really wouldn't worry about it. My daughter doesn't drink milk either. I actually never gave it to her. I just couldn't stomach the thought of giving my daughter something that was made for a baby COW. My daughter is not a cow. Strange, I know. I mean, I grew up on milk, I put it on my cereal and what not...but just couldn't get past giving my HUMAN baby daughter something a mama cow made for HER baby.
So, I did some research. Dr's push the whole milk for the fat content, and also for the vitamin D and calcium that is added back INTO the milk because the pastuerization and homogenation strips the milk of any nutritional value it once had.
Three servings a day. So... yogurt, cheese, cottage cheese... whatever. In addition, my daughter eats avacado, I give her Cod Liver Oil every day, and I ensure that she is getting a healthy balanced diet with lots of fruits and veggies and good fats. In addition, during the winter months I also give liquid vitamin D supplement.
Her pediatrician knows she doesn't drink milk and I've never gotten any grief over it. She has always been on the lower end of weight...but she's just that way. She is a tall lean girl. Even at birth she was not a chunky baby. She's always remained on her normal growth curve. I've been thankful her pediatrician recognized she was growing appropriately for HER and didn't push me to give her more fats and junk. (I've heard of that... pedi's freaking out because the baby wasn't fat fat fat and pushed mom to give high fat stuff like whip cream! Ridiculous)
Water is the best hydrator. So, keep that up!!! Don't offer juice. The sugar content, even in 100% juice is unreal. It's better to give the actual fruit so the body can absorb the fructose more slowly then to drink it in liquid form.
Make sure she gets a balanced diet and is getting some good fats... she will be just fine.