I can see her death on the Michigan death index as Isabel B Reid 7 February 1982 but not on the social security index.
There is another Isabel Reid who died 1990 who is on the social security death index.
Here she is on the SSDI - Isabel Reid - Birth Date 6 Mar 1900 - February 1982
Issue Year 1956 Michigan
Last Residence 48021, Eastpointe, Macomb, Michigan.
Anc tree shows this record ?
John Smith Reid - Death Date 14 Jul 1976 Helier Jersey (this is Helier Jersey Illinois)
Probate Date 23 Dec 1976 London
Sandra