I have been doing some digging around and it gets confusing. Still not sure where Doreen fits in.
4117/1895
CROKER ALBERT E
VAUGHAN ALICE M
YOUNG
Had 3 children to above marriage
Apparently had a child in 1910 to Wallace, no father's name noted.
WALLACE THOMAS G1322/1910 -- ALICE -- BALMAIN SOUTH
edited to add another child without father noted
CROKER Rita Adeline 10916/1905 -- Alice -- Balmain
Divorced Albert Croker in 1926
Title Divorce papers Alice May Croker Albert Edward Croker
Contents Date Range
08-07-1924 to 05-10-1926
https://trove.nla.gov.au/newspaper/article/245839698Have you obtained the birth cert. for Thomas 1910? Just wondering if it would list his siblings.
Is there any chance Doreen could be a daughter to Alice or this has been eliminated?
Divorce files can at times hold interesting information such as kids etc and would be interesting if Doreen makes a mention. OR there could be very little information on the file. Hit and miss with them at times.
Just making suggestions to try and find out who your Doreen is.