Hi Tinkerweed,
Great scores! It sounds like you have a smart little one!
This is slightly off-topic, but I just wanted to suggest that you try to volunteer in the classroom, if possible. I have found that it's beneficial for many reasons. First, there is no better way to see how your child compares to the rest of the class -- in behavior, academics, size, maturity -- than to spend time in the classroom. Second, it's a great way to see how the teacher interacts with your child as well as all the other children. Third, the teacher will get to know you as a parent and as a person, which could mean that she sees you as a caring, involved, sane parent rather than, perhaps, a helicopter parent or a pushy parent. Fourth, the teachers almost always need help, either with differentiating with the kids (they might need you to help with small groups of kids) or with more mundane tasks like copying. which will free up some of their time to work more closely with individual students. And fifth, if you are in the classroom there are sometime brief snippits of time when the kids are out of the room that you can have casual conversations with the teacher about your child. I don't know what your situation is, or if volunteering in the classroom is a possibility, but anytime you can offer to help the teacher with anything (even cutting projects in the evenings if you can't make it into the classroom during the day) it can only help.
I hope your DD's teacher does become aware that your daughter did so well on the NNVAT (because, otherwise, what's the point of the testing?) and that she works happily with you to challenge your DD, and that it happens sooner rather than later! If after time and discussions with the teacher, both casual and more formal, you see that your DD is still not getting what she needs, that might be the time to request further testing (perhaps achievement to round out the picture a bit) or to seek it out privately.