This might be her in 1920 - the age fits with the one in 1930.

Since she is living in the house with grandparents, surnamed Ingram, they may have gotten her name wrong:

Name: Zebedee Whitfield
Age: 7 years
Estimated birth year: abt 1913
Birthplace: Georgia
Race: Black
Home in 1920: Byromville, Dooly, Georgia
Sex: Female
Marital status: Single
Relation to Head of House: Granddaughter
Mother's Birth Place: Georgia
Father's Birth Place: Georgia
Image: 818