Dear Anne,
From my discussions with local experts..their advice is:
"It seems more likely that she would have been buried in Ewhurst or Rudgwick. However so far as Hambledon is concerned, if you contact the secretary to the PCC who would be able to tell you if the burial registers for the 1920s are still held in Hambledon or have been deposited at the Surrey History Centre.
The secretary is Mrs. Rebecca Webb, Old Barn Cottage, Rock Hill, Hambledon.
If this fails, a visit to the Surrey History Centre at Woking would probably be the most productive. They hold the registers of baptisms, marriages and burials from many parishes. Their telephone number is 01483-518737 -
www.surreycc.gov.uk/surrey history service
Hope this is helpful"