Will she drink a smoothie or "milk shake". You could get fruits and veggies in her that way and she will think she is having an unhealthy snack. I know that sounds bad but it is a thought. You can use all kinds of berries(frozen or fresh), bananas, mangoes, whatever you find. Veggies that hide well are carrots, cucumbers, and any squash just mix them with the fruit.
I make chocolate banana or berry smoothies. I use soy chocolate milk(about 8 oz) and half a banana or a handful of berries and ice. Blend it up and it is ready to go. You could also add some peanut butter to the banana one. It is really good. It is easy to get the good stuff in them.
You could also try making some bean dips (white bean or garbanzo bean) with some veggie chips. Look on Foodnetwork.com for some easy recipes.
One other idea is to have a snack drawer or shelf that she knows she can have anything from. Fruits, veggies for dipping, granola bars, yogurt, cheese, low fat popcorn (the mini bags), everything healthy or whole grain. I hope that you find some things that she will like and that she starts eating healthier. Good luck! Sorry to be so long winded.