From Sands directories
C Ammondeen 1919 Lower Creek
C Ammondeen 1920 Lower Creek
C Ammondeen 1924 Lower Creek
C Ammondeen 1925 Lower Creek
From NSW electoral rolls
1936 Ammondeen, Lower Creek, Upper Macleay, Kempsey, landholder
1937 Ammondeen, Lower Creek, ditto
1943 Ammondeen, Lower Creek, ditto
Perhaps they were forced to live apart to get work. Her death notice did say she was beloved wife of the late Charles Deen and probably wouldn't say that if they were "unhappily" separated for 40 years ....?
Good luck with death cert

cheers,
Ros