Mitchell

There were three girls Violet, ?? and maree I think. They had half brother or step brothers David and Russell Ross all lived at 15 Parkside

Yes - it was Maree Mitchell

Christina Mitchell is actually Jill Christine Mitchell (my mother). Maree was the youngest child, both from the marriage of Robert(Bob) & Ellen(Nelly/Nell). In addition to David and Russell there was another brother, Des, as well as another sister, Josie (Josephine), all children of Ellen from a previous marriage.