What Is A Good Healthy Diet To Burn Fat For Adolescent Girls?

i am 13 and not athletic. i hate vegetables but i love fruit. with the economy the way it is i cannot afford fresh fruit, especially in the winter. and with winter here, i cant go outside for a walk/run. i am 5’3” and weigh 137 pounds so im at risk of getting over weight. i want to feel good about myself during the summer and feel comfortable in my own skin.. does anybody have any ideas/tips?