From what I understand, classic PKU does not automatically mean that your daughter will not be a bh4 responder. i think some people on this website do have classic PKU & respond to Kuvan. It works in approximately 40% of PKU patients. How did you find her to be non-responsive to bh4? Was it actually tried? If not, it may be an option you want to explore when your daughter gets older.
I don't know the answer to your second question. I have not heard of an actual toolkit to check levels daily being used but I think one is being developed now.