This is the third novel in Pattison's Shan series. Shan is a former government inspector, an ethnic Han Chinese from Beijing, exiled to Tibet (for having the misfortune of being slightly too successful in fighting public corruption). Pattison's Shan series quickly became one of my favorites last year, along with the superficially similar Qiu Xiaolong's Inspector Chen series. Both series are English language mysteries which involve Han Chinese, and both are really good, but there the similarities pretty much end.
Xiaolong's Chen is a confirmed bachelor, somewhat westernized and worldly (having studied English literature at the university), who fights crime and solves homicides as a Shanghai police official. In contrast, Shan (meaning Mountain in Mandarin), although ethnically Han and Taoist, is spiritual and idealistic, and comes to identify strongly with his fellow outcasts, Tibetan Buddhist monks. Unlike Chen, who manipulates the Communist system from within, Shan uses his knowledge of the apparatus as a former government official to affect the system from without, typically in defense of a downtrodden Tibetan.
The series - and the novel - are engaging in their own right, with a varied cast of characters, Han, Tibetan, and Foreigners. This novel, and the two previous novels, are written against the backdrop of the political and spiritual fissure between Tibet, the Communist Party, and predominantly Han provinces. The reader actually learns quite a bit of history, and plenty about both the P.R.C. and Tibet. After reading the first three novels (Did I mention they were all good?), I was intrigued and inspired enough to do some research, and the author puts a significant amount of history into his plots.
Regardless of your desire to learn about Tibet or Buddhism, the ultimate test of a mystery novel (or any fiction) is - is it entertaining? I bought one of the Pattison/Shan series as a gift for my mother, an avid mystery reader and connoisseur.
I think if you are giving a novel as a gift to your mother, that speaks for itself.