Mary Louise Fairchild MacMonnies Low (August 11, 1858-May 23, 1946) was, during her years in Paris, one of the most successful American women painters of her generation.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Mary_Fairchild_MacMonnies_Low

Two Women Chatting in a Garden with a Mill by Mary Fairchild MacMonnies Low
1887 / Oil on canvas / 71″x56-3/4″ / Private collection

Mary Fairchild MacMonnies Low on Artnet: http://www.artnet.com/artists/mary-fairchild-macmonnies-low/

Further reading:
https://magazine-archives.wustl.edu/fall09/Mary%20Fairchild.html
“Biography of Mary Fairchild MacMonnies (later Low)” on Terra Foundation Collection
“Discover the life and work of Mary Fairchild MacMonnies-Low” on Ministry of Culture, France

“Art and Handicraft in the Woman’s Building of the World’s Columbian Exposition, Chicago, 1893”~
includes illustrations of the missing murals by MacMonnies and Cassatt