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.
You need to contact a solicitor in your state ASAP that practices in family law and get your son on the Airport watch list ASAP.
This is done through the Australian Federal Police.
You also file an application with the Federal Circuit Court to have orders that your son remain with you.
You have to do this ASAP because if she leaves you will have a difficult case seeking your son be returned under the international convention.
I hope this makes sense and is of assistance. If there is nothing further
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