She is on http://vitals.rootsweb.com/ca/death/search.cgihttp://vitals.rootsweb.com/ca/death/search.cgi her MMN was Williams. She died 06/17/1951. They have her SSN, which means you can write for a copy of her SSN application, if it is worth $27 to you. It will give you her parents' full name, her birth place and birth date. It also gives her address and her employer (if she had one) when she applied.
She isn't on http://ssdi.rootsweb.com/cgi-bin/ssdi.cgihttp://ssdi.rootsweb.com/cgi-bin/ssdi.cgi? You can save yourself some typing by entering someone who is on it ("John Smith"), clicking on "SS-5", copying the letter into Word, then changing just the name, date, and SSN.