I actually like the approach the nurse is using with you and your daughter, but to an extent, I understand how you feel not knowing what to do.
I hated the first two weeks after my diagnosis because all I got was a canister of test strips and a levemir pen. I had no idea what to expect but in retrospect that was a good thing.
Trying to learn too much at once can be overwhelming, and trying to fix things too fast can actually have negative consequences. If your daughter's blood sugar drops back to normal too quickly she could feel physically uncomfortable. Our bodies seem to exhibit hypo symptoms (shakes, loss of coordination, sweating, etc) when our blood sugar drops rapidly. In a normal person that would be below ~4mmol/l but if her blood sugar has been 10+ for a very long time, she might feel uncomfortable even at 7mmol/l
Keep asking questions and you're right to be concerned about the lack of information. Just know that it's not necessarily a bad thing at this point.