Maroroa was awarded the title of Woman Candidate Master (WCM) in 2005 for her result of 5/9 at the 34th Chess Olympiad in Calvià, Spain in 2004. In 2007, she was awarded the title of Woman FIDE Master (WFM) for her result of 6/9 at the 2007 Oceania Women's Zonal Chess Championship in Fiji. Her third-place finish, again scoring 6/9, at the 2009 Oceania Women's Zonal Chess Championship on the Gold Coast, Queensland earned her the Woman International Master (WIM) title. During this time Maroroa was playing club chess in London, and was for a number of years the strongest player at Hammersmith Chess Club in West London.