Social Security # Application for Mayme Marsh

Well finally the first of three ancestors Social Security # Applications has come in . This is Mayme Marsh Justus, my grandma Winnie's mom.  This is actually the first document I have on the lady, don't know if I ever knew her or she held me as a child . 

She doesn't give her full given name  and used the Married Name Justus on the top line. She applied for the number about 19 yrs after her husband had died. By then the oldest child was married (grandma winnie )  and the other younger kids, Harold was 25, David was 23 and Margaret was 22

My question or questions would be , did Mayme actually have a jobduring her life time, being she signed and got her Number just at the end of the Depression. Did she spend the entire Depression with out the kids, and not married. Both her parents were still alive at this time-where were they.