You can check with Kittenlady and Penelope. They have hypoglycemia, are both on the insulin resistance diet and losing well. CAD might be another option for your sister. A lot of people with carb addictions and/or hypoglycemia don't do that well on Atkins, especially not induction levels. She might want to skip induction and go to OWL. Whichever, she'll have to wean herself off the sodas. They're a nono for hypoglycemics and most of the carb addicted.