Even if she doesn't become a writer, I think reading the classics would help her become a better citizen of the world. I don't know about you, but understanding important works of literature helps me understand visual art better, and it makes me listen to music differently, and it informs how I watch films. It fleshes out my grasp of history, politics, etc.

I dunno. I feel like literature changes the way that I look at just about everything, whereas most mediocre writing leaves me where I am.