If this is her in the 1940 census
Name: Zella Morgan
Titles and Terms:
Event Type: Census
Event Date: 1940
Event Place: Tract C-14B, Deer Park Village, Sycamore Township, Hamilton, Ohio, United States
Sex: Female
Age: 43
Marital Status: Married
Race (Original): White
Race: White
Relationship to Head of Household (Original): Wife
Relationship to Head of Household: Wife
Birthplace: Kentucky
Birth Year (Estimated): 1897
Last Place of Residence: Same House
District: 31-123
Family Number: 151
Sheet Number and Letter: 8B
Line Number: 49
Affiliate Publication Number: T627
Affiliate Film Number: 3080
Digital Folder Number: 005460511
Image Number: 00401
Household Role Sex Age Birthplace
Grover C Morgan Head M 48 Kentucky
Zella Morgan Wife F 43 Kentucky
Zemar Morgan Son M 22 Ohio
Harry Morgan Son M 20 Ohio
Freddie Morgan Son M 16 Ohio
Citing this Record:
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KWX5-YHW : accessed 21 November 2017), Zella Morgan in household of Grover C Morgan, Tract C-14B, Deer Park Village, Sycamore Township, Hamilton, Ohio, United States; citing enumeration district (ED) 31-123, sheet 8B, line 49, family 151, 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 3080.
Then this is her son Zemar
https://www.familytreenow.com/search/people/results?first=Zemar&last=Morgan&citystatezip=Ohio&rid=0s0&smck=LuxRa9T_SsHkLHc8eOlh8Q