http://www.ancestors.co.za/database/trees/getperson.php?personID=I7...
https://www.wikitree.com/wiki/Emmett-53
date is given as 20 May 1937
Her form of Information of a Death gives date as 21 May 1937 - https://www.familysearch.org/ark:/61903/3:1:3Q9M-C912-6BBL?cc=27216...
As does her Death notice - https://www.familysearch.org/ark:/61903/3:1:3Q9M-CS7T-FQJM-5?cc=257...