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 Please understand this is not legal advise but a guide to assist you.
You have an obligation to inform immigration that the marriage is over. if you do not you are in breach of the law.
She cannot get a divorce for cheating it is a no fault system. You have to be separated for 12 months before she can apply for a divorce and it will not assist her in getting a visa.
If she wants to stay she should apply for he own visa.
Again the violence will not allow her to stay.
If you want a divorce you can live in the same house but not as husband and wife. After 12 months separation you can apply for a divorce.
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