 In 2005 she was the editor of student magazine "Critic Te Arohi", the year's winner of the Aotearoa Student Press Association's award for Best Student Publication.In September 2005 Critic's annual "Offensive Issue" included a fictional diary of a man who used drugs to stupefy and rape women.The Office of Film and Literature Classification banned the issue in early 2006, after Walker's tenure as editor had ended.