Career
Monahan got her start in the industry from her fashion designer father. Monahan auditioned for the role of Jenny in when she was six. She returned to filming on that year, and stayed with the show for six years, departing in 1993 one year before the show concluded.
She became the primary income earner for her family when her father died just before Hey Dad..! debuted.
Monahan returned to Australian television for a short time as Heather in another long running Australian soap opera, Home and Away, in 1995 and alongside fellow actress, Simone Buchanan in Pacific Drive, performing a non-speaking role. Monahan later founded ShrimpTank Productions, which works in social media and search engine optimisation, along with Going Down, a planned travel and diving web series.
Monahan authored a book, titled "Allegedly" which was released by New Holland Publishers on March 7, 2016. In March 2010, Monahan claimed in an interview with Woman"s Day magazine, and later on current affairs television program A Current Affair, that she was sexually abused on the set of Hey Dad..! by Robert Hughes, the actor who played her on-screen father.
Hughes strongly denied the allegations and claimed to have engaged defamation lawyers.
During an interview aired on A Current Affair in March 2011, Monahan expressed her concerns that charges may not be laid against Hughes. She stated that she intended to initiate legal actions against Hughes and television executives who, she claimed, were aware of Hughes" alleged actions and failed to take action. After her allegations in the media, Braveheart, a sexual assault advocacy group, asked Monahan to become an ambassador.
Hughes was arrested in London on 9 August 2012.
His extradition to Australia was approved on 28 September 2012. In early April 2014, Hughes was found guilty of sexually abusing young girls.