I purchased a car in July 2016. Because I was new in Australia my wife took out the credit agreement and the car had to be registered in her name. We had an agreement that the car was mine and I would make all payments as I was the sole user. We have since seperated and she now wants the car returned to her or paid in full. I am still in a position where I cannot obtain a loan. Do I have any legal position to make her honour to our agreement.