When your daughter takes her exams, as others have said she is entitled to rest breaks. My advice would be to make sure that if she has a hypo, she should take all the time that she needs before returning to the exam. For driving we are required to wait 45 min after a hypo, for good reasons. So perhaps expect to take time if needed after a hypo.
It is great that your daughter has taken things in her stride, and yes there is a lot to learn. She might like to look at the videos produced by student with Tupe 1. They are available on DUK website and are called Type1 Uncut. They still make me chuckle when I watch them.
I run the exams in a secondary school and agree with SB completely. Also because she is so recently diagnosed, the school can ask for special consideration because it will have affected her concentration - it's not too late to do this whatever anyone tells you and a few marks added might be the difference of a grade. If you can get her DSN or consultant to write a letter that would be helpful but is by no means essential.