Worth the fight?

Joy is taking violin lessons this year. And only lessons. Meaning, she loves her lessons, but she hates hates hates to practice. We are lucky if she will touch her instrument twice a week outside of class. Initially, she had enough innate musical ability to still be at the head of her group. But after several months, the other kids- who actually practice- have surpassed her. It's frustrating because she is good at it, and she does like the lessons, but it is exhausting to have to beg, threaten, or bribe her to follow up on the assignments her teacher gives. I just hope if we power through, eventually she will have that a-ha moment, where she decides that she WANTS to practice. Fingers crossed it comes sooner rather than later.