Sorry to hear that. My son was diagnosed with diabetes at the age of 5. It is not easy for him OR his parents. However, he is now a registered pharmacist who is making more money than I do. He is 27 years old and has NO signs of complications.
Take it seriously. Learn all that you can about it. Learn how to handle a glucagon injector. Tell others (including her friends) so that they can react appropriately during a reaction. Yes, you will have reactions unless you run BG's so high that she will be blind by the time she is 25. Have identification on her at all times. Make sure she carries glucose tablets at all time. Anytime she feels low eat one immediately. Have a meeting with school administators and EACH AND EVERY teacher she has to brief them. Realize that strangers will think that low BG's are because she is drunk, crazy, or on drugs. They will not help or worse.
The junior high he went to had a rule that no changes could be made on the assignments each kid was given. Unfortunately, he had gym class just before lunch. We protested, but they refused to change anything. After three bad reactions (and one that landed him in the hospital), we hired a lawyer. Only then did they change his schedule so he had no more reactions.
Prayers for you and your daughter, leah. Type I diabetes is a difficult thing to deal with. Please feel free to FReepmail me if you would like.