| Year | Grandmother’s Trophy |
| 2002 | Margot Keenan |
| 2003 | Wendy Burstall |
| 2004 | May Graham |
| 2005 | Margot Keenan |
| 2006 | Marg Roberts |
| 2007 | Rhea Martin |
| 2008 | Stella Torrance |
| 2009 | Jill Wain |
| 2010 | Marg Roberts |
| 2011 | Jill Wain |
| 2012 | Jan Boulton |
| 2013 | Leni Livingston |
| 2014 | Jan Boulton |
| 2015 | Leni Livingston |
| 2016 | Belinda Holt |
| 2017 | Lyn Taverniti |
| 2018 | Meredith McKnight |
| 2019 | Meredith McKnight |
| 2020 | DNP |
DNP * Did not play due to COVID-19 Pandemic