Stolen generation NT

Hi, I’m looking to find records that my mum was made a ward of the state. Having a full blood mother and white father she was taken away. I have tried through NAA but not with all details. She was in st Mary’s home AliceSprings from 1953 to 1963. Other than books and notes taken from mums family, I can’t find any proof that her white father put her in the home and didn’t want anything to do with her. Where do I go now. She was Peggy butcher born 3/01/1945, bing bong, Robinson river, Borroloola.