What is the author's tone in the nonfiction book, Jane?

The tone is often muted throughout the text, partially because of the ethereal atmosphere that Nelson has created. But it is muted also because of the uncertainty of what Nelson is trying to accomplish and what she will find. Jane's journal and diary provide the vivacity of the book, as they show her emotional extremes. Even when Nelson's dreams are fraught with danger from strange men, the sense is never one of extreme threat, but instead an emotional distance is present that deliberately keeps the reader at bay. The emotional distance reflects the gulf between Nelson and Jane as well, and the reader is able to access that distance through the understated, almost listless tone that persists through the text and to the end as well, when the Nelson surrogate feels underwhelmed by the emotional discovery she has been granted through her journey.