The first year tends to be difficult for caregivers because of all the new stuff - technology, eating insulin testing activity and the new language you have to learn. Also for parents, getting used to the idea that your baby has a life-long disease of which you can do nothing about can be devastating if not exhausting…
for your daughter, just try to remember what you thought about what threatened your life when you were 15! I can tell you for certain that I was a genius immortal, and when they told me I was sick and no once could help me, it was the beginning of a 15+year untreated depression. It started with denial, and then a over a decade of anger. This is a personal journey, and no matter how hard you try you can’t make these feelings go away, just because you want them to.
If I needed to hear something when I was diagnosed it was this: it’s not your fault. you didn’t do, eat or say anything, or harm anyone, and diabetes is not a punishment. Life is not fair and being good doesn’t mean very tough things won’t happen to you. If you need to be angry then be angry, but understand that after the anger slows down… there you are just as you were a minute ago…except… now you are more tired.
If your daughter can benefit from a therapist then please seek one out. The psychological part of this disease is very much as hard as the physical part, sometimes even more so.
If she’ willing to look she can come here to talk, yell, or whatever she needs to do with a group of people who have all been there, and I can tell you first-hand, eventually diabetes becomes a background issue where it belongs.