This is an inspiring and fascinating insight into the world of an extraordinary woman (Tenzin Palmo, previously Diane Perry), who endured all kinds of privations and gender discrimination in order to follow her arduous path to enlightenment. She belonged to a Tibetan Buddhist lineage, but her story reminded me of that of another British woman (Jiyu Kennett Roshi) of the same era, who became a Soto Zen Buddhist priest in Japan. Her book ("The Wild White Goose") is also well worth reading. In fact, although there is no mention of it, it would be surprising if the two women were not aware of each other as their paths must have crossed at some point.
Despite all the positive things I have said about the book though, I think the message that came over to me most strongly is that even if you copy Tenzin Palmo's example completely you will still only catch glimpses of enlightenment before you die! There's no short cuts.