my thing was that i didn't really care about these people or the anthropology or the history. 

she's stuck in a loveless marriage and husband doesn't stimulate her mentally AND he is abusive so that's great. her husband is jealous of her fame and also an abuser. and the other guy loves her. at the end, she decides to leave the husband for guy 2 but the husband murders her and she was pregnant

90% of the story developed in the field where readers learn about characters as they study the indigenous groups 

i'm a sucker for plot so the ending bumped it up from 3.25 to 3.5