I believe the maiden name for Dora J. Zolotoff is Bookteff; it is shown on the CA Delayed birth for her daughter Mary; father shows "J"

From the CA Death Index:

Daughter: DEVINE ROSE RIYA 1907 08 31 Father: ZOLOTOFF FEMALE RE SAN FRANCISCO 1955 06 15 556266654 47

Daughter: OTTERBEIN MARY 1915 03 09 Mother: BOOKTEFF Father: ZOLOTOFF FEMALE CA ORANGE 1981 05 09 558094877 66

Son: ZOLOTOFF FRANK JOHN 1920 03 31 Mother: BOOKTEV MALE WA SAN FRANCISCO 1984 06 16 548053004 64

Possible son: ZOLOTOFF PETER 1898 09 10 MALE SU ORANGE 1970 05 21 567103561 71

Manifest for S.S. Paris, sailing from Havre, France on 6/15/1927; arriving in New York 6/22/1927

Zolotoff, Dora, married, age 54, Russian, Ethnicity is Hebrew; born in Smalenske, Russia, issued at Riga Latvia on June 7, 1927; last permanent residence was Rostoff (Rostov); relative from where she came is Father: Mr. John Zolotoff, Rostoff, Russia; final destination is San Francisco, CA; previously in USA in 1910 and 1925 in California; relative at destination is Daughter, Miss Rya Zolotoff, 110 Carolina Street, San Francisco, CA
Mary, female, age 11, born in the San Francisco, CA
Fedor, male, age 5, born in Aberdeen, WA

Her husband would be J. John Zolotoff.

1930 U.S. Federal Census - California
ED 32, sheet 19A
4/12/1930
1242 De Haro Street

Zolotoff, Dora H., head, age 55, divorced, rents home for $16 per month, immigrated in 1910; she and parents born in Russia; occupation: laundress at a laundry
Peter, son, age 31, born in Russia, immigrated in 1910; occupation: laborer in lumber yard
Mary, dtr, age 15, born in California
Frank, son, age 10, born in Washington