I might be able to help.If her surname at time of death was Fuller then I have located her in the CA death records.I found a Dollie B Fuller born 12-24-1907 Oklahoma, mother's maiden name Sweat, died 7-24-1963 in Los Angeles.
My gggrandmaother is Serena Matilda Nuttle.Her father was James W. Nuttle and her mother was Mary Jane Platter.In the post both above and below yours you will see a list of all of James and Mary's known children.It includes a Robert.
Robert D. Nuttle was born January 18, 1872 in Indiana.He married sometime in the 1890's to a Rhoda E. ? from Michigan.Also where their first two sons are born.
In the 1900 census Robert is in Sumner Co., Kansas.His is listed with wife Rhoda, Sons James, Glen, Charles, and his widower father James W.
James W. dies in 1908 in Sumner Co. and Robert moves south to Oklahoma.In 1920 he and his family are listed as so:
1920 McElroy Twp., Pawnee Co., Oklahoma Nuttle, Robert D. 47 IN ~Rhoda E. 42 MI ~Charles H. 22 MI ~Glen 20 KS ~Lulu 16 OK ~Belle 13 OK ~John 10 OK ~Pearl 8 OK ~Francis 4 OK
Nuttle, James R. 25 MI + family
Anyway I don't know any more than that for Robert and his family.But I can try and fill in any blanks on his ancestors.I hope this is your Belle