Thinking outside square again,
Have we considered these two NSW births - mother's name Kate, no father listed, both in Sydney?
1887 (ref 606) Lilly G Curran,
1893 (ref 2333) Dorothy Curran.
Will edit this posting with any further info on either of those two girls - perhaps their mother, Kate Curran was the one mentioned in the Gazette
EDIT Cannot find Lilly or Dorothy as Curran anywhere in NSW, but read the next post, may have found Kate Curran in Victoria.
JM