The second link states that Boznańska was not as honored in Poland as she felt she should be. That problem seems to have been corrected posthumously, because (at least when I visited a while ago) part of a gallery in Warsaw's National Museum was devoted to her work. The National Museum in Kraków also had examples of her work on display.
Boznańska trained in Munich and Paris and soon was influenced by Impressionism and Post-Impressionist painting. Much of her career was based on portraiture, and she incorporated as much of those approaches as she could, given the need to have her depictions recognizable people. My opinion is that Impressionism, in its extreme form at least, is barely compatible with portraiture and not worth the trouble of trying to combine the two.
Below are examples of her work up to 1906. Examples of later work are hard to locate in a Google Images screen dump, possibly because none stood out as being interesting.
These paintings are essentially Impressionism-free.
Portraits of a young Breton woman (or perhaps of different people who look similar) painted a year or so apart. The first painting uses comparatively clean, definite brush strokes, whereas the second one has a more Impressionist feeling.
Here are examples of Boznańska's Impressionism-influenced portraiture style.
Above are various non-portrait works where Impressionism is more at home.