Your link to her Service Record on NAA has timed out however her WW2 Service summary contains more information.
Have you considered you may be seeking information about a living person and that is not permitted on rootschat.
There are two marriages on the NSW bdm website post 1946 however Jean enlisted in Melbourne and was discharged at Tocumwal. Marriage registrations are not available post 1942 in Victoria.
You state that she is a relative so you would obviously have more information about her parents, siblings etc.
Cando