My son does the same thing unless I ease up on his carb intake majorly. If I keep the high carbed foods he likes, here at the house, he's constantly eating. I have hypoglycemia, chronic low blood sugar, and wanting to much every hour to two hours (if not sooner) is a side effect of the sudden blood sugar drop.

If you stable her out with more protein laden snacks and ease up on the major carbs, then you'll probably see less want to snack all the time.

There are some wonderful snack cakes, and bars, you can make using homemade Almond flour. You can grind your own Almonds to do this. Food processors work great. And you can make it diabetic style so that after she eats it, there will be no sudden sugar drop.