My partner recently migrated to Australia and our 2 young children were both born overseas but have Australian citizenship and I have been the sole primary carer of both children here in Australia without any help since my son was 8 months and now he is 5 years old, my daughter since she was 5 months and now she is 26 months old. After supporting and sponsoring her and signing a lease on a house, she told me that she did not want to be with me and demanded I give our 2 children to her and leave now that she has permanent residency but she knows I have been an exemplary father as witnessed by many people and she has also been informed that she will have difficulty getting custody of children because of the emotional attachment we have, so now she is attempting (for the second time) to abuse the legal system to destroy my credibility and take the children by bypassing the Family Court and applying for an intervention order against me based on terrible lies and distorted truths. (The first time she endangered my children, injured my son, attacked me (after drinking) but fell and hurt herself and then accused me of assault resulting in an intervention order that was withdrawn) She has many people from her cultural group who also abused the system, left the man who sponsored them, took the children and found new partners who are advising her on what to say and ways to beat the system and she knew none of them before we broke up last month, while she was in court having a 12 month final intervention order placed against her for an assault on my ex-wife she was heard conspiring with other women on ways to discredit me and being advised on how to take the children from me. I have serious concerns that the courts will not give me the opportunity to present the abundant proof I have of her history of deceit, betrayal, violence, neglect and intentional deception, allowing the children to be placed even temporarily in her care without the facts being known as she is the violent one but her accusations make me out to be a monster which could not be further from the truth as I am the most decent man and loving father around and have dedicated my life to raising my children and had no social life or companions in the 6 years. She knows she cost me the greatest love of my life 6 years ago with her lies. I have cancer, I am an exemplary father, I supported her for 6 years overseas while I was also taking care of the children myself, I sacrificed everything to pay for her migration and used my last ever chance to sponsor a partner. I forgave her countless betrayals and lies, she made endless promises of a wonderful, loving, affectionate and happy family life that never happened and she just wants to take everything from me and leave me with no life and no future, but I have been told there is nothing I can do about it legally. If her intervention order is successful then it will destroy what is left of my life in many ways, not only have I been the best father you would ever meet but I am a forgiving, generous, patient, gentle, supportive and loving partner who has never hurt her or done anything bad to her. I will never recover from this or be able to have another relationship or family because of what she has done to me and cost me and it will be too late for me but the laws must change to stop people like her abusing the system and especially intervention orders and taking very valuable resources away from the people who genuinely need help, it happened to me and it will keep happening to other men. Is there anything I can do to protect my children, stop her from destroying my reputation with her lies or take action against her for what she cost me (not only money) under Family Law?