Claire you will need a lawyer.There are free community legal centres in QLD who could give you advice as to who you could see that woint cost an arm and a leg-excuse the pun.Someone in the profession should be able to give you advice on who are less costly but still effective.
If you have to get one of the larger no win firms.yes they will milk you but you should at least get some satisfaction rather than just give up.
You said you had relocated your husband to Cairns so here is the website of the Cairns centre-
Cairns Community Legal Centre / 07 4031 7688 / 1800 062 608.
As you have found out there are lots of amateur lawyers around here.Forget us and get a real lawyer.