Is her practice independent or with a knowledgable parent?
I ask because our five-year-old still needs a lot guidance to practice. Obviously, he's younger, but he would definitely balk at the idea of practicing alone, though he's a very social guy.
What works the best for us is letting him stay up for an extra 15 minutes if he'll spend 5 to 10 minutes practicing. He's happy to go to bed later than his little brother, and it's a time that works for DH, as I'm not in the least musically inclined. We don't do it every day; I don't think that's necessary for his age.
