"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K4H3-7XB : accessed 23 February 2017), Jackie Wilhoit in household of Gerome Wilhoit, Civil District 24, Greene, Tennessee, United States; citing enumeration district (ED) 30-33, sheet 6B, line 73, family 102, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 3896.
It may be possible to confirm family relationships with Jackie 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 Jackie: