Eleanor's parents George and Ruby are living without children back in Illinois in 1930, so it's unknown what happened to Eleanor.
Fact: Census (1920) Big Horn, Sheridan, Wyoming, United States
Sources
Census
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MNBP-MT3 : accessed 17 August 2017), Elenor M Atteberry in household of George C Atteberry, Big Horn, Sheridan, Wyoming, United States; citing ED 118, sheet 5B, line 94, family 28, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 2029; FHL microfilm 1,822,029.
1920 census
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DNA Connections
It may be possible to confirm family relationships with Eleanor by comparing test results with other carriers of her ancestors' mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Eleanor: