My name is ***** ***** I am a NSW Solicitor. Thank you for your question, and will do my best to assist you with your question. Please understand this is not legal advise but a guide to assist you.
It will affect her application because she was an illegal and this will go against her.
You should get yourself a solicitor not a migration agent to fight this. The Tribunal is a legal avenue and you need to have someone that knows the law or she will be deported and not be allowed re-entry for 5 years.
The law society in your state will give you a referral to a solicitor that practices in migration law. It is a specialised field and not many work in it.
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