Theres no need to go all out. Its easier to think of the foods you shouldn't have... such as bread, pasta, rice, sugar. Stay away from those. Eat as much meat as you like, and include things like eggs, fish (canned or fresh). At dinner I eat my veggies and and meat or chicken, and just keep the rice or other starchy side dish off my plate. Lunch... I have a can of tuna with mayo.. or a salad, or even a burger (no bun). Its not a diet. You're just learning to keep away from carbs which is a healthier way of eating. If you can't explain that to mom so she'll understand.. then just eat what I suggested, and don't say anything at all.