As of 2010, Mentor plays 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. For the 2011 ANZ Championship season, she has signed with the Melbourne Vixens following changes to player eligibility rules. By playing in the 2011 ANZ Championship, Mentor asked to be excused selection in a tour to Jamaica as she was looking to buy a house and was told that this was not possible. If she failed to make herself available, then she would be 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.