A few observations:
The
previous thread on Annie Luker/Parker was unable to establish her date or place of death. The web page mentioned in Reply #4 there as giving a biography doesn't seem to have been captured by the Wayback Machine. A family tree referred to in Reply #23 gives her full birth name as Hagar Ann Luker (compare below).
The Find a Grave memorial for the Annie Parker at Camberwell Old Cemetery, created from the cemetery register, doesn't estimate a year of birth, so age was presumably omitted from the register. The burial date was 22-Apr-1916 and in those days burials generally took place within a few days of death. From a search by plot number, it was a common grave with 8 other people, reducing the chances of finding a headstone, if there ever was one. Deceasedonline gives her full name as Annie Doris Alice Parker, so
this may be the wrong person (see above).
Square 4 is being converted into a "woodland burial" area. I had a look at it in 2022. From the close planting of the saplings, I guess this will be for ashes. I noticed a few of the original common grave style miniature headstones but due to my camera being mis-set didn't get any usable pictures. I'll have to have another try.