As of 2007 Mentor played with the Surrey Storm in the Netball Superleague, after winning two Superleague premierships with Team Bath. In 2008, she signed up to play in the Australasian ANZ Championship with the Adelaide Thunderbirds. Mentor played three seasons with the Thunderbirds, and was a member of their 2010 championship-winning team. During the 2010 and 2011 season, she signed with the Melbourne Vixens following changes to player eligibility rules. Mentor was dropped by England for the next 18 months due to England Netball's new policy of limiting selection to domestic-based players. The policy, an attempt to improve the standard of domestic netball, stated England Netball were not prepared to accommodate athletes plying their trade in overseas leagues and consequently disqualified Mentor from playing for England. She was considered ineligible for the England national team for that entire year, including the 2011 Netball World Championships in Singapore, although this ineligibility was later overturned via a compromise agreement between the players and the management team allowing Mentor to play for England in the World Championships. In 2014 Mentor played her fourth season with Melbourne Vixens as their number 1 Goal Keeper. The Vixens went on to win the Grand Final in July: becoming ANZ Champions for the second time in their history. The following year her name was submitted by INF in the global Sports Accord Awards, in the Women's Sports category, where she made the top four and was invited to Sochi, Russia to receive the award. It was a busy year with another ANZ season at the Melbourne Vixens, followed by the Netball World Cup, hosted in Australia in August where she captained the English side to a Bronze medal.
Lightning and Magpies in Super Netball
Following her fifth season with the Vixens in 2016, the ANZ Championships was disbanded and the Suncorp Super Netball was established. With three new teams entering the new league, she relocated to the Sunshine Coast, where she captained the new Sunshine Coast Lightning netball team to a title in the inaugural year of the competition. Mentor was named the Player of the Year for the 2017 Suncorp Super Netball season as well as being named best goalkeeper in the team of the year at the same awards. Mentor repeated her success in the following season with a further selection on the 2018 team of the year as well as another championship with the Lightning. On 7 September 2018, Mentor signed a two-year deal with the Melbourne-based Collingwood Magpies. She was named co-captain of the team ahead of the 2019 season, alongside existing captain Madi Robinson.
