I'm not sure how helpful this book would be to those who know little of the history of Tibet or the complexity of its religion and politics. The summaries are perfunctory and do little justice to the realities and may leave readers more confused than ever, or worse, with the belief that they have some actual understanding.
Hilton reveals the shallowness of her own understanding when she lists "Muslims" as among the ethnicities of the region, along with, say, Tibetans and Mongols. She also gives, IMO, rather too much weight to foreign meddling in the affairs of Tibet prior to the Chinese invasion. She'd have us believe that Britain, Russia, and China had hands in a country notorious for keeping foreigners out, and that both the Dalai and Panchen lamas were playing all three of these great powers against one another. Maybe so, but this helps justify rather than undermine the rationale for China's invasion. I seem to remember other analyses that there was just one Brit in Tibet at the time of the invasion and that was the whole reason China was said to have invaded. I'd be wary of Hilton's account--it smacked too much of the assumption that the great powers have had everything to do with everyone's fate, when I would argue that Tibet might be the one place where great power machinations have actually never had much traction. Tibet might simply have made its own mistakes, and China might simply have been impossible to withstand in any event.
I also don't think she has a grip on the history of Buddhism in general or of Tibetan Buddhism in particular or of the relationship of Tibetan Buddhism to the rest, but I'll leave it for experts to sort her out on that. Just: reader beware. Read it with a grain of salt.
Sit up and pay attention about 2/3 through, when the hunt for the PL tightens down and the DL tries to settle it, and and all hell breaks loose. The DL, unsurprisingly, is quite fallible when conducting a delicate state matter from afar with no reliable communications technology. I've said this before but whenever I read of Tibet I feel like I'm in a medieval heroic story. The place names! The lineages! The mythical beasts! The lost princes of the blood! The magic! And it's going on right now.
Equally amazing is China's behavior. Not only its heavy-handed arrests and tortures right in front of the whole world, even of a 6-year-old boy, but it's flat-footed propaganda. The Soviets were no better at enjoining the proletariat to this or that act of patriotism (is clumsy PR a peasant thing?), but the subtleties of trying to merge a fundamentally atheistic ideology with a deeply religious culture in Tibet in order to motivate the Tibetan people to cooperate with their own subjugation have really been beyond the Chinese.
Painful as it is, it's worth reading about.
Meanwhile, dear Tibetans: You speak of enlightenment, but your lines of transmission are all male-to-male. Given all the other upheavals and endangerments and extinctions, it might be time to reconsider this. Maybe you'd have more flexibility if these lamas could incarnate as women. Just a thought.