Hi M.---Cows milk is a very allergenic food for humans even though some are able to tolerate it. These allergies are very subtle and often mistaken for other problems. Cows milk is designed to make baby cows grow into big cows in a very short period of time. I am a reformed cows milk drinker after taking a series of wellness classes, taught by a Naturopath who has her PhD in Nutrition. For information on the dangers of eating any dairy product, please go to www.pcrm.org and put dairy in the search box.
Calcium needs can be met by other sources, such as the fortified oj as mentioned before, as well as by leafy greens such as broccoli, bok choy and kale ( http://www.vegkitchen.com/tips/calcium). Sesame seeds are great source of calcium and can be added by eating humus which contains gound sesame (tahini). I think almonds are another good source. You also want to think in terms of absorbable calcium and even though diary offers more calcium per unit, far more calcium is ABSORBED when it is from plants because of the complimentary nutrients found in those plants. As for fat, we really don't need all that much (absolutely no more than 20% of calories) but do be sure that the fats that the family eats are from plant sources such as ground flax seeds, olives and avocado.
Your daughter should be drinking plain old filtered water at every opportunity. It is essential for good health. Starting her with that habit now will set her up for optimal health.
Keep offering the other milks as she is likely to decide that one will be ok. I just use these milks in my cereals and smoothies so it really isn't essential that she drink them with meals. You could also get coconut milk, oat and hemp milks as well. Different milks have different nutritional qualities and they are all fortified.
I also recommend against supplementing with vitamins, unless it is whole food based. There is a lot of emerging evidence that isolated fragmented man-made vitamins do NOT help to prevent disease (why else would we take them?) and can even cause harm in the body. I can make some suggestions about what you might want to look for as you make that decision. I can also share documents, articles and reports on all of the topics I have shared here. Please feel free to contact me with your questions and I'd be honored to help. Good luck...D.