Further research would be needed to verify this. This memorial (from FindAGrave) in Barraba General Cemetery, New South Wales, commemorates a Barbara CROFT who was born on 17 Nov 1919 and died on 22 Feb 2009. Mrs CROFT was last known to be resident in Barraba, New South Wales.
https://www.findagrave.com/memorial/269446631/barbara-croft She was the daughter of Howard CARTER of Barraba, New South Wales. She m 1943 Frederick James CROFT 1909-92/93 (3rd s of Sir Hugh Matthew Fiennes CROFT 12th Bt (Eng 1671) 1874-1954). They had 1 son. The Barbara CROFT on this memorial is described as a "wife and mother", and the date of birth given would fit with a marriage in 1943.
There is a memorial in the same cemetery to a Fred CROFT who was born on 2 Mar 1909 and died on 15 Dec 1992 (described as "...husband of Barbara..."). This Fred CROFT has the same birth date as Frederick James CROFT, scion of the Croft baronets of Croft Castle (Eng 1671). However, DPB gives his year of death as 1993 rather than 1992 as it is given on the memorial.
https://www.findagrave.com/memorial/49218999/fred-croft