For the most part, the author carefully marshals and weighs evidence and notes how little we know for certain. She tries to observe the limits of what we can know from archaeology, runestones, and myth and sagas reduced to writing much later, by Christian scholars.
She also regularly speculates that Viking women must have been just like us and felt or done or experienced X - often something a bit simplistic and obvious.
So ultimately, while it was fun to see discussion of familiar characters and scenes from various sagas, the overall effect, for me, was not deeply satisfying.
As a side note, I was a little disappointed not to see, in the discussion of old age and death, any discussion of one of my favorite passages from Laxdæla Saga. Olaf Hoskuldsson is his father's illegitimate son by a very favored slave-girl/concubine, Melkorka, who happens to have been an Irish princess by birth. Olaf confirms his mother’s royal lineage and then accompanies his maternal grandfather to Dublin. Inevitably, “the news that the king was accompanied by his grandson, the son of his daughter who had been taken prisoner at the age of fifteen years, caused great stir. No one was more affected by the news than Melkorka’s nurse. Despite being bedridden with old age and illness she rose and went, without the aid of her stick, to meet Olaf. [...] Olaf received her with open arms, set her upon his lap and told her that her former charge was living in comfort in Iceland.” (Laxdæla Saga 309-10). “Tears of joy came to her eyes” on recognizing Melkorka’s tokens, and “her happiness was doubled by seeing this outstanding young son” (310). Moreover, even though Olaf and the king do not remain in Dublin, but go off fighting, “The old woman enjoyed good health for the rest of that winter” (id.).
In this regard, I'd note Friðriksdóttir does, in fact, discuss Olaf's mother Melkorka (who is certainly worth discussing!). While I don't fault her for not including Melkorka's unnamed old nurse, I do think it's a lovely story that shows a tender relationship between a promising young warrior and an ailing old woman he has never met, a woman surely of little importance socially, who are united in their mutual affection for his mother.