Hi Kelly, welcome (and bump for others who can help re US options). I think you're spot on about the importance of learning early to work hard. Have you read What a Child Doesn't Learn? I'm on a tablet without the link to hand but it should be easy to google esp if you use site:davidsongifted.org as it's often mentioned here; sometimes useful to show schools.
For now go with the flow, don't push, do help support her interests. Later you may need to be prepared to afterschool and advocate. Music lessons are great for encouraging effort (but as well as appropriate schooling, not instead).
