I couldn't tell this from your previous postings: have you been taught how to measure the food and count carbohydrates? Concerning night time testing: My son is measured every night. He doesn't wake up. Even when I test him in the morning, he doesn't wake up. I would tell her you will be doing this before she sleeps and just test quickly. You need some sort of idea what is happening at night. What range do you want you daughter to be in? I consider a low to be below 60 -- otherwise I don't treat. Some endos have different theories. My son gives himself insulin for any reading over 120 (unless he has sufficient insulin on board to cover the reading). You are correct in that you should be learning how to change the insulin doses. You have it correct that if she goes low, she needs less insulin. I think it unsual that the meal insulin would kick in and cause a low an hour after eating. However, if this is your daughter's pattern, the food digestion isn't matching the insulin action. Try giving it to her later to see if this helps. It was a year before we made too many decisions on our own. Now we never consult the endo for changes. My son eats what he wants for breakfast and lunch, but joins with the family for supper. He eats what he wants, but his father or I prepare it, so I guess it is a joint effort. Every carbohydrate is counted and insulin given for it.