I've been a vegetarian since I was 5. My mom was always worried that I wasn't getting enough protein (and iron, vitamins, etc). As a kid my main sources of protein were peanut butter and cheese. I never ate tofu or beans or anything like that back then, but I do now. Now I love beans, but I still hate tofu!

Try making some fruit smoothies with protein powder--they're a great way to get lots of protein and vitamins in a kid-friendly treat....I crush some ice in a blender and then add fruit, soy milk (or reg milk), a bit of yogurt, a big spoonful of protein powder and blend...if she's not eating low carb, you can also add ice cream, sorbet, cocoa, or fruit juice to the mix. whatever you like!

hope that's a bit of a help
Suzy