This might be Adelaide, daughter of Alan and Maude Upton:
California death index: Adelaide C. Kinney b. 4 Sept 1914 in Nebraska d. 16 Aug 1991 in San Diego, California (same as her mother) mother's maiden name - Burnell father's surname - Rooney
This information is only as good as what the informant tells the coroner or doctor who fills out the death record.Perhaps, whomever the informant was for Adelaide, they didn't really remember her maiden name?Or someone was just wrong and it was really Alan Upton?
I don't know for sure from this record.
I do not find any info for Frances Upton, the other daughter.