Jayne, I am sorry I cannot help or advise, I am a type 2 diabetic but I am also a mother and so I can well imagine what you are going through right now.
As a Mum you will be wondering why your lovely, perfect daughter became ill in first place, you will question whether you have done something wrong, you will wish its you with diabetes and not her.
Jayne its a shock, but you and your little girl can learn about diabetes together, the more you understand about this disease the less fear you will have.
My younger daughter has 2 girls with type 1 diabetes in her class, they often come to our house to play and its amazing how well they are coping, how responsible they are. Now I am eat ing low carb and so is my family (although husband and children do eat more fruit than I do and they might have new potatoes with their meals but on the whole we all eat pretty much the same) and you ought to hear the squeals of delight from the girls during our low carb baking sessions, its so much fun and best of all the low carb muffins, cakes etc dont cause massive spikes in blood sugar nor do they require huge doses of insulin.
Have a look through the recipe section here for inspiration, let her choose recipes, cook together, do lots of talking and have lots of hugs and cuddles, there is a lot of help in this forum and there are some good books for children with diabetes as well.
Sending you a big hug, dont despair, it will get easier you know ((((((((((((Jayne))))))))))))