It's a fine idea to focus on Anne Sullivan Macy, the brilliant, damaged woman who has always been in the shadow of her famous student, but due to the loss or absence of primary material, Nielsen has to step in with much speculation, much “perhaps” and “could have been.” Some of this is inevitable when writing biography, but here it begins to seem like padding. And I object to the frequent “must have beens” which assume feeling and thoughts which may or may not have been the case.
I ended up feeling it would have been more interesting and revelatory to read the original source material, the letters and autobiographical manuscripts from Macy that do exist, with linking notes and commentary, rather than subjecting her to so much external interpretation.