Just saw mention of the anniversary of this death online, and it doesn't appear to have been noted here, so (a little late, admittedly) but for the record:
Also, her sister, (Hermione) Jane, born 11 Aug. 1943, wife (m. 1988) of Callam Macleod, of Point Chevalier, Auckland, N.Z., died on 1 June 2011.