From the CA death index:
JOSLIN GERTRUDE BLANCHE born 1910 04 15
mother PENFIELD father SWAN FEMALE born KS died SAN JOAQUIN county dod 1985 10 10 ss# 558149543 age 75
Galt is actually in Sacramento county.....
I checked the Lodi NewsSentinel on Saturday Oct. 12 and Monday Oct. 14, Tuesday Oct. 15th and nothing appeared
If she was a resident of Galt try contacting the Galt Herald
This is an on-line publication of
The Galt Herald
604 N. Lincoln Way,
Galt, CA 95632
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Have you tried Findagrave?