http://vitals.rootsweb.com/ca/death/search.cgi
There were no Maude Lewis deaths that fit your data nor Maud Lewis....all were born elsewhere or father's or mother's maiden name weren't correct.....did a search on just the first name Maude and Maud and mother's maiden name.....maybe she remarried.....

FITZGERALD MAUDE H 08/02/1892 KELLOGG F LOS ANGELES(70) 09/07/1961 69 yrs Add

NEWCOMB MAUDE M 03/17/1882 KELLOGG F LOS ANGELES(70) 02/04/1965 82 yrs Add

nothing matched on Maude or Maud and the father's surname
and finally

a few that died in Ventura and were born in Nebraska
SHAFFER MAUDE B 05/18/1886 F NEBRASKA VENTURA 02/29/1972 558-66-1178 85 yrs Add

BORRELL MAUDE C 06/26/1887 F NEBRASKA VENTURA 07/27/1973 567-34-6894 86 yrs Add

HAMILTON MAUDE ESTELLE 03/19/1891 F NEBRASKA VENTURA 03/20/1978 496-22-5709 87 yrs Add

GOBLE MAUD S 09/03/1901 F NEBRASKA VENTURA 04/13/1976 551-24-8394 75 yrs Add


deaths prior to 1940 can be searched here..
Vital Source
http://www.vitalsearch-ca.com/gen/ca/_vitals/cadeathm.htm