She was in foster care as per this article
http://www.dailymail.co.uk/news/art...ng-overcome-criminal-past-regain-custody.html
The girl whose body was found in a Queensland river a week after she went missing was in foster care and had often run away from home, a former carer says.
As police stepped up their investigation into whether Tiahleigh Palmer, 12, was murdered, details of the girl’s troubled have emerged, including that her mother was hoping to regain custody after spending years in and out of prison.
Her former foster carer Julie Pemberton says the girls’ mother Cyndi Palmer, 30, was preparing for a custody hearing as she believed she finally ‘had her life on track’ after struggling as a teen mum and spending years in and out of prison.