Congratulations to you and your daughter on pursuing a performing arts education!
There are TONS of scholarships out there. You may have to get creative to find them but a
simple google search will be a great start. Thinking outside the box is key to this alot of times because if it was easy, everyone would do it. (When I was applying to
business school, the hosting company that operated the school's website even had
a scholarship for the best essay. Hardly anyone knew about it, but those that did received it)
Many times local organizations, businesses, and foundations will have scholarship money available. I would first check with the admissions department at your daughter's new school as suggested earlier, but also see if you can talk to any current students or alumni. Quite frequently, alumni will establish endowments or scholarships for younger students based on merit & need.
Also, I would look for both specific and broad scholarships available. Some may be strictly for performing arts high school students, and others may be for high school students in general.
Best of luck to you and your daughter.