My stepson was on the Ketogenic Diet for a long time. It is much more restrictive than Atkins. Everything has to be weighed and measured with precision. We carried a scale and measuring spoons everywhere. It does help with smaller children, don't remember the exact age but believe is under 10 for sure. If you are interested, make sure you do it right. Just following plain Atkins won't work. You have to measure and balance everything according to her weight. Good luck.