"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KQK1-ZWC : 28 July 2019), Doxie Garner in household of Charles Garner, Ward 2, Little Rock, Big Rock Township, Pulaski, Arkansas, United States; citing enumeration district (ED) 60-23, sheet 12A, line 1, family 278, 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 166.
It may be possible to confirm family relationships with Dixie by comparing test results with other carriers of her 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 Dixie: