I agree with the others. You shouldn't be afraid to eat in your range! 1300 calories is not going to make you gain weight, pretty much no matter what size you are (unless you're extremely short, under 5'0 and are completely inactive or have metabolic issues.)
Food is fuel, and if you want your body to be healthy, you shouldn't be afraid of it!
SP has a great article full of calorie-boosting tips without filling up on junk or dense, heavy food: www.sparkpeople.com/resource/nutrition_art