Here are a few ideas. Since you know Zoe's date of death you might get a copy of her obituary. That would list any family members by name. One of them might have the information you seek. If you cannot get this from the YOUNGSTOWN VINDICATOR (newspaper for Mahoning County) then you could ask on this Mahoning County OH genforum page if someone who visits the main library frequently can get a copy of the obituary for you. I wish you good luck in your search.