Christine is very well respected amongst the Tango community. She made the effort to live amongst, dance with and learn from surviving milongueros from the Golden Age. Through her research she brings a more credible history of Tango, avoiding the usual cliched caricatures. Her book covers the social history, the evolution of the music and the dance itself.
Her discussion of the dance is particularly interesting. Tango is much more nuanced and subtle than the strutting acrobatics often associated with the term "tango". It is a language for communicating with your partner, it has a grammar, a vocabulary and is incredibly expressive. Christine goes into some detail about the social dance as it was danced, and in particular the rationale behind its technique. Argentine tango is about "two hearts" moving as one, in a pleasant and comfortable way ... and not about strenuous kicks and flicks, and Christine gets this. Many books and even teachers do not get this.
This is a small easy to read book, but its full of valuable content. I have many books on Tango and this one is my favourite.
The only things that stops this being a 5-star is the book is printed on horrible cheap paper and the photos and illustrations are not very good. If she does a second edition I hope they sort this out!