M.T.
A little juice as a preschooler is okay. If putting an ounce of juice into 4 ounces of water makes her drink it, I'd do that a couple of times a day. If a rounded teaspoon of chocolate milk powder makes her drink a glass of chocolate milk, I'd let her have that once a day too. I'm not big on tons of sugar, but if that's what she's getting and you're avoiding other sugary things like sweetened cereals, fruit cups in syrup, etc. it wouldn't bother me. I would avoid the things like Crystal Lite that others have recommended, that is a diet drink with artificial sweeteners - I believe sugar is better.