Yes, I have 3 documents for her naturalization. Her number is 252610. It says her petition was received May 6 1938 and finally processed/oath of allegiance was May 9 1939.
I do see a city district of Zavodsky in Minsk but I'm still not sure if that would be the correct match.
She did marry in the US, twice. Her first husband was my great grandfather and he died young. Then she married another man soon after. The marriage documents to both men state she is from Minsk, Russia. It also lists her parents as "Aykow" and "Pruzina" -- However, I think "Aykow" is meant to be Yakov. Her Ellis Island ship records has her father listed as Jakob so I think the person writing the document could not understand her accent.