I think if your child enjoys practicing, she should practice. =) And I'll just mention that I've toned down my expectations for practicing quite a bit from my childhood piano, which was spent under the tutelage of a Russian emigre, with pretty much what you'd think as practice demands! My career as a concert pianist was short-lived (at best), and I have no ambitions or expectations for my children to be professional musicians, so our practice schedule is intended to develop perseverance, time management, and reasonable amateur musician skills, sufficient for educated enjoyment of music.

...pronounced like the long vowel and first letter of the alphabet...