My ex partner broke up with me when I was 22 weeks pregnant. He is a recovering IV drug user and has an addiction to alcohol which led to a volatile environment for myself and our baby. After he broke up with me I moved home to NSW to be with my maternal family. I contacted him the day our baby was born and he flew to NSW to meet her. We agreed on a private agreement for child support. Since then I have tried to keep him updated with videos and photos of our daughter have told him of every milestone every doctors appointment ect. I recently had to contact him to inform him child support needed to assess him regardless of our private agreement and that it was just going through the motions so that I could receive the family tax benefit. Things escalated and he became abusive and threatened me so I ceased contact. He is now refusing to answer child supports enquires and has ceased paying anything privately. I want to know given my circumstances and the distance between us can I apply for sole responsibility of my daughter? I want to be able to take her overseas when I travel for work? And now that communication has broken down between us if there are any medical issues what happens ?