@CaliMex, have you looked into the Johns Hopkins Center for Talented Youth? http://cty.jhu.edu/welcome/index.html. The CTY offers multiple programs which might be of interest to your family, including online courses and summer programs. There are entry requirements, which include above-grade-level tests, so read the application descriptions carefully.
The online course in math could be done at home. I have a friend who did that for her son.
As your daughter is young, you have time to explore different options. Please don’t take it the wrong way when I say that sending your child across the country should be only one among many options which could prepare her for happy, productive adulthood.
Have you researched the Caroline D. Bradley scholarship? It is open to 7th graders, so you have time to apply. http://educationaladvancement.org/caroline-d-bradley-scholarship/. It is an amazing opportunity. If your daughter won that scholarship, your list of possible high schools could be much longer.