My brother had custody of my son and they lived in Queensland. In December last year my brother spilt up with his partner and he moved out with my son. I've been informed that he has now handed him back to his ex who he was not married to, they do have two children. His ex is not on the parenting orders. Only myself, my mother and my brother are on the orders. Is it legal for her to have him in her care when she isn't on any parenting orders??