The Spy by Paulo Coelho

Like most of Coelho's books, a story about something seems to be about something else instead. Mata Hari, the spy, tells her story through letters written to her lawyer from her prison cell awaiting execution.  She is above all else a self made woman but at what cost?  Was it the time and barriers to women that forced her to become the "exotic dancer" that captured the imagination of Europe.  Was her promiscuous life really a way of finding power - or love?  Despite her reputation as a spy, it doesn't appear that she shared anything of importance with either Germany or France but she was still found guilty - of espionage? of challenging the rules of society?  What does Coehlo want the reader to think about her, about war, about what is sacrificed for what we think we want?  Hmmm.  Maybe it is just about Mata Hari.  Nah...