News by Samantha Maiden  Employment Minister Michaelia Cash reassured a Liberal staffer sleep tight after an incident in a minister s office, pledging to her in a voicemail message that her chief of staff had the issue under control . Brittany Higgins alleged she was raped at Parliament House in Defence Minister Linda Reynolds ministerial office by a colleague. Ms Higgins was just 24 at the time of the incident in March 2019 and only months into her dream job of working at parliament. The alleged incident threatened to explode in Senate estimates two years ago, prompting the voicemail from Senator Cash. Senator Cash has told news.com.au that she never knew the issue involved an alleged sexual assault at the time, only that it was an incident in Ms Reynolds office that Ms Higgins had informed her she preferred to keep secret at the time.