This might be Sophia Christenson. Her hair is parted right down the center typical of a little girl.
G.G.Grossfield was a photographer in Rushford Minnesota in 1884 and 1885. The photo fits the time frame.
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Update from Iggy:
In the Minnesota, Territorial and State Census, 1849-1905 and 1900 US Census, we find Ella Sophia Christenson (b. Nov. 1883), living in Money Creek, Houston County, Minnesota. Money Creek is 8 miles from Rushford, Minnesota, which sits near the Fillmore-Houston county line. This girl's (the one in the census records) parents were Christian M (b. abt 1854 in Illinois) and Lina/Tina M (b. abt 1856 in Norway) Christenson/Christianson.
She had a large number of brothers and sisters. She no longer appears with her family in 1910, when she would have been 26.
Ella Sophia Christianson, age 24, on 17 Feb 1909, in Money Creek, Houston, Minnesota, married Martin Laumb who was the same age.
In 1910, the couple lived in Anderson, Barnes, North Dakota. The 1920s, found them back, with their only child, Ruth Esther, in Rushford, Minnesota. Ella Sophia died in 17 Nov 1974 at the age of 91.
Ruth E. Laumb (b. 31 Aug 1913 d. January 19, 1989 at age 74 in Rushford) was a elementary school teacher and principal and appears to have never married.