While continuing to hold this position, she took a year of postdoctoral research at the University of Alberta, and on her return to Queensland in 1970 was promoted to senior lecturer, promoted again to reader in 1975, and given a personal chair as professor in 1985.[6][7][8] At Queensland, she directed the Centre for Discrete Mathematics and Computing from its formation in 1998 until 2004.[8] She has also held visiting positions at the University of Waterloo, University of Reading, University of Manitoba, University of Illinois at Urbana–Champaign, University of Western Australia, Auburn University, and University of Canterbury.[6]