Perhaps I'm being a little narrow in the definition of documentary. Yes, she documented her family, but many of the pictures are set up, and work as lovely little narratives or fictions, but there's a real sense of the presence of the camera. This is not a criticism of the work at all, but I often think of documentary as being work that comes from observation, and not from illustration, for lack of a better word.
With that said, of course, August Sander set things up, and posed his subjects, and his work feels very documentary. Even when Salgodo makes a portrait, that is clearly posed... they feel very documentary. I think there's room for both approaches... but it starts to muddy the definition of the document... or just make it a very broad umbrella!!