I'd be happy to try for her anyway, but - would you please re-check your source? It is possible she didn't make it to either dat abase, but almost everyone who died in California after 1970 are on one or the other. Most are on both.
On the CDI (above) I found:
Surame RICHARDSON Given EVELYNLEONA DOB 06/27/1904 MMN KILBAMK[KillBank?] FMN STEPHENS Sex F B/P CANADA Death place CONTRA COSTA Death Date 10/05/1987
Contra Costa County is two counties over from Stanislaus. If you know she lived most of her life in Newman, but died in a hospital, rest home, daughter's home or other home in CC County, I will try for her obit; but please say so. I type clumsily enough to know mistakes happen.