Might be this woman, however she is in an orphanage in 1935 and 1940.
US Census, 1940 Ward 12, Buffalo, Buffalo City, Erie, NY
https://familysearch.org/pal:/MM9.1.1/KQ53-GJW
Residence St Vincent’s Home/ Female Orphan Asylum
name: Rachel Foster
Female age: 13 Single Pupil Race: C
birthplace: New York est birth 1927
residence in 1935: Same Place
U S Census, 1930 Pittsburgh (Districts 1-250), Allegheny, PA
https://familysearch.org/pal:/MM9.1.1/XCC3-1PV
head Abe Araton M 39 AL
boarder Henry Foster M 27 US/LA/LA
wife Ethel Foster F 22 LA/LA/LA
daughter Rachel Foster F 3 NY/LA/LA
https://familysearch.org/ark:/61903/1:1:X7CK-9LM
Jean M Foster
United States Census, 1930
HOUSEHOLD
ROLE
GENDER
AGE
BIRTHPLACE