"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHCG-7XZ : 12 April 2016), Adelaide Mcgee in household of William Mcgee, Michigan, United States; citing p. 15, family 100, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,206.
"Michigan Deaths, 1867-1897," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:N3X4-C5S : 12 December 2014), Victoria A. Mcgee, 20 Apr 1885; citing p 153 rn 10, Unadilla, Livingston, Michigan, Department of Vital Records, Lansing; FHL microfilm 2,363,630
It may be possible to confirm family relationships with Adelaide 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 DNA with Adelaide: