She later auditioned for the Western Australian Academy of Performing Arts and graduated in 2006.
[2] From 2009 to 2010, Mills was a member of the resident acting ensemble at Sydney Theatre Company,[3] selected by then co-artistic directors, Cate Blanchett and Andrew Upton.
Mills received positive reviews in her lead role as Lian in Sue Smith's Kryptonite,[4] a 2014 co-production between Sydney Theatre Company and State Theatre Company of South Australia.
In 2017, Mills toured Australia playing Julia in Headlong, Almeida Theatre and Nottingham Playhouse's production of Duncan MacMillan and Robert Icke's adaptation of George Orwell's 1984 for GWB Entertainment, Ambassador Theatre Group Asia Pacific and State Theatre Company of South Australia.
[5] Winner Grand Jury Prize CATE Film Festival 2016 2016 U.S Premiere Official Selection 16th Annual Shriekfest [8] 2016 Australian Premier Official Selection Sydney Sci-Fi and Fantasy Film Festival[9] Mills was nominated for a 2014 Sydney Theatre Awards Best Actress in a Leading Role in a Mainstream Production for Kryptonite.