Hi Debra. It looks like her parents are John A. Wilson & Ida Olson of Little Sauk, Minnesota.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9QS-TS9 : accessed 14 February 2022), Effie R Willson in household of John Willson, Little Sauk Township, Todd, Minnesota, United States; citing enumeration district (ED) 195, sheet 4B, family 75, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,794.