The only animal that NEEDS cows milk are baby cows.
I totally never thought I'd be the person that says that, lol, but it's true. As long as you're daughter is getting enough calcium and vitamin D from other sources, she doesn't need cows milk.
Personally, I'd ask your pedi about a multi-vitamin even with her good eating habits (because chances are she will go through a picky phase).
And a lot of pedi's these days are also saying to skip the whole milk, especially if your family has a weight problem (which, lets be honest, most families do these days) and go straight to 2%.
My son is 2 and has never been a milk drinker. He'll occasionally drink some chocolate milk for a treat, but that's it.
That said, if I did have a child that drank milk, I'd wouldn't want to cut it out of her diet completely. Once it's gone, you may have a hard time ever adding it back.
Good luck!