I have no idea if this might be related, but maybe you will recognize some of the siblings names, and see a link to your ancestor? If Ahaur is her husband?, aged 29 - then the older children are likely from a previous father. Or maybe he is the oldest child, head of household.
United States Census, 1870 Florida Jefferson Township 04
Source: "United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MNZ6-YLW
: 12 April 2016), Rosana Joyce in household of Ahaur Joyce, Florida, United States; citing p. 4, family 44, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 545,630.
Ahaur Joyce M 29 South Carolina
Rosana Joyce F 44 Georgia
Burwell Joyce M 20 Georgia
Jane Joyce F 18 Georgia
Jasper Joyce M 16 Georgia
Sarah Joyce F 14 Georgia
Andrew Joyce M 12 Georgia
Alice Joyce F 9 Georgia
Lucinda Joyce F 6 Georgia
Lydia Joyce F 4 Georgia
Millie Joyce M 2 Georgia