A difficult situation to be in and this site is not always helpful these days. With your background a Sim Instructor is a Sydney possibility. Have you any check and training experience? The Australian licence is another hurdle, the clouds are different down here.
Aviation jobs are advertised on 'Seek'. Just enter 'pilot jobs' on the search function. Also, AFAP Pilot Jobs.org.com is another site. I admire your support to your wife, a tough move. Good Luck to you both.