This is a link to the Amazon Page, It got very nice reviews from Peter Boal and Terry Teachout among others.
I found it very indirectly, through this page, from "The Daily Cross Hatch" which has this wonderful quote from Siena's husband, Marc Siegel, about how he came to love ballet:
What happened with the ballet thing is I had a moment…Sienna pops in this tape of old black and white footage of Don Quixote. It was Suzanne Farrell as Dulcinea and George Balanchine as Don Quixote — him walking almost in slow motion and she’s doing this incredible dance all around him and [knowing some of the background of the performers] — I could feel that it was real. He was reaching for her and she just kept alluding him. The feeling was electrical it just shocked through my spine and I got it. What I felt just now is what gets someone hooked on ballet. And from that point on I was actually able to read ballets and from that point on I could get something from ballets, they could nourish me in a way they couldn’t before. And the reason is it doesn’t matter — it’s never going to be my favorite medium — but what came through that moment was the universal man-woman mystery, it’s human. It’s beyond whatever medium, it just comes through this moment, in this case ballet.