Rosemary Derwin - Chief Commissioner

Rosemary Derwin is passionate about the opportunities Girl Guiding provides girls and young women across Australia to explore who they are enabling them to be the best they can be. Since making her Promise as a Brownie, Rosemary has had extensive Guiding experience. She was honoured to be appointed Chief Commissioner on 1 December 2018. Rosemary previously held the role of Acting Chief Commissioner from 1 January 2018 – 30 November 2018 and prior to this was the appointed director to the Girl Guides Australia Board from Girl Guides NSW & ACT. Rosemary is a former Assistant Chief Commissioner of Girl Guides Australia and has been awarded the Red Kangaroo for service to Guiding.

Rosemary brings to the Board experience in governance, strategic planning and process and a strong commitment and belief in the fundamental importance of the contribution not-for-profits make to the community as a whole.

Rosemary has been a Director of UN Women (formally The National Committee for UNIFEM in Australia) and was a member of the UN Women delegation to the Commission on the Status of Women in 2007 and 2008.

Professionally, Rosemary has a background in business and financial management.

Kate Alcorso - Chair of the Board


Kate is a leader of the Rainbow Star Guides, girls aged between 5 and 10 in Launceston, Tasmania. She has been a Guide for about 30 years, starting as a 7 year old. In particular, Kate has always taken up the leadership opportunities available to her within the organisation and had served on the Girl Guides Tasmania board prior to her current appointment.

Kate is a Senior Associate Lawyer for a Launceston law firm practising in commercial and estate law, with a particular focus on business transactions. She is a member of the Taxation Institute of Australia and keeps abreast of developments in corporations and taxation law and has been involved with other local boards within the community sector.

Passionate about Guiding and seeing the development of the girls in her own Unit, Kate is thrilled to contribute to the governance of Guiding in Australia as Chair of the Girl Guides Australia Board.

Joanne Muller - Director, Girl Guides NSW ACT & NT

Joanne has been a member of Girl Guides for nearly 55 years and holds the Queen’s Guide, Emu, Red Kangaroo and Asian Pacific Leadership Awards. During this time, she has fulfilled the roles of Leader, District Manager, Deputy State Commissioner, Honorary Legal Advisor, as well as serving on a number of board sub committees at both state and national level.

With formal qualifications in science, education & law, as well as being a Graduate of the AICD Company Directors course, Joanne has 26 years’ experience in the regulation of health practitioners.

Currently she is a member of the following: Nursing and Midwifery Council of NSW (Legal Member), Royal Academy of Dance London – Development and Fundraising Committee (Member), the Curriculum Committee of the RANZCR,  the Consumer Panel of the National COVID-19 Clinical Evidence Taskforce, the Nursing and Midwifery Strategic Reference Group of the Australian Government Department of Health  and the Radiation Advisory Council of NSW.

She recently completed roles St Johns Ambulance NSW (Director) and Southern Metropolitan Cemeteries NSW (Chair).

Helen Reid - Director, Girl Guides Victoria

Helen was a Guide for 7 years as a child then returned as a leader when she was 21, a role she has held for nearly 35 years. Guiding has provided many opportunities including travel to international events in Kenya, the UK and Switzerland. Helen has also travelled to every State in Australia to represent GGA at WAGGGS training sessions. Holding positions such as State Program Manager, Assistant National Program Manager and National Program Manager she brings a wealth of knowledge about the Australian Guide Program.

Helen is a retired librarian having managed both TAFE and University libraries with a Masters in Human Resource Management and PhD in Librarianship. She is currently living on a farm in the Victorian Otways growing trees for shelter, conservation and profit. She also has her own mob of kangaroos.

Georgina Gaffney - Director, Girl Guides Tasmania

Like many women in guiding, Georgina’s guiding journey began when she was 7 and she hasn’t stopped since! Her involvement has varied as she’s grown through the movement, some of the most memorable moments being her Queen’s Guide award, being part of the program team for FanTAStic, and Leading Edge Young Women’s Forum.

Prior to her appointment as GGA Board Director for Tasmania Georgina has been a Member Director on the GGT Board for two years and more recently Chair of the Tasmanian State Guiding Committee. Georgina has been involved in re-establishing the Olave Program in Tasmania, and is passionate about the value guiding brings to adults as well as youth members.

Professionally, Georgina is a pharmacist, working in community pharmacy and aged care services.

Natasha Montesalvo - Director, Girl Guides Queensland

Natasha joined Girl Guides in the UK aged 5 and never left. She is a Queens Guide recipient and Gold Duke of Edinburgh awardee. Natasha has held roles as a Peer Educator, Unit Leader, District Manager, Region Manager, Board Director and Assistant State Commissioner. She continues to lead a Unit of Junior Guides in Brisbane’s western suburbs and is passionate about ensuring their Guiding journey is every bit as adventurous and fun as hers was (and continues to be).

In her professional life, Natasha is a Tourism Consultant, supporting destinations and tourism businesses with strategic and sustainability advice. She has a PhD from Griffith University examining the complex networks that exist between tourism operators and destination management organisations and how they could leverage relationships more effectively to drive brand buy-in.

Yvonne Power - Director, Girl Guides Western Australia

Originally from the UK,  Yvonne is a former Girl Guides WA Guide Leader who grew up involved in Guiding as her grandmother was an active Unit Leader.

She is the co-founder and COO at Village Energy, a microgrid technology startup with a vision to help accelerate the world’s transition to green energy. Holding two Masters degrees and an MBA, Yvonne is experienced in business operations, strategy and innovation, and won the 40under40 award in 2020 for her work.


Katherine Raskob - Director


Katherine is the Chief Executive Officer of Fundraising Institute Australia, the national peak body for professional fundraising.

Her experience spans both established and start-up, commercial and not-for-profit companies including Australia’s largest marketing association, the Association for Data-driven Marketing & Advertising (ADMA), and SBS, Australia’s national multilingual and multicultural broadcaster. She has also held positions on the board of Synergy & TaikOz, Australia’s leading percussion ensembles, and Kim Carpenter’s Theatre of Image.

Katherine holds a Bachelor’s degree and a Master’s degree in international business management and is a graduate member of the Australian Institute of Company Directors.

She grew up in Minnesota, USA, and was in the American Girl Scouts for many years.

Laura Hume - Director

Laura trained as a Chartered Accountant in the UK and has spent the last 8 years of her career working across a number of roles in professional services, with diverse experience in problem-solving, business planning and reporting, research, analysis, and stakeholder management. Emigrating to Sydney, Australia in 2015, her most recent role at KPMG has focused on managing strategic firm-wide projects to drive growth and delivering tech-enabled solutions for national and international clients.

Laura has been involved in Guiding from a young age, joining Rainbows in the UK at the age of 5 and progressing to Brownies and Guides. Laura has personally seen the life-forming positive impact that Guiding can have, enjoying a number of wonderful experiences including camps and jamborees, taking part in gang show, being lucky enough to visit Our Chalet in Switzerland, and making friends for life.

She is a passionate advocate for women in leadership and for improving access and opportunities for young women to reach their full potential so was thrilled to have been appointed to the board in October 2019. Laura is committed to helping GGA evolve through a period of rapid change to continue to empower girls by building skills in leadership, confidence, and teamwork in an environment of fun and adventure.

Kellie Earl - Director

Kellie Earl is a retired military officer who spent fifteen years in the Royal Australian Air Force, working all over Australia and served in Afghanistan. She has also worked as a Management Consultant at PwC.

Kellie’s experience lies in people management and she has led teams to provide services across a broad range of customers working as a project manager and a HR consultant. Her leadership and management skills are applied across all her roles and she brings strategy and governance experience to the GGA Board.

Kellie is passionate about gender equality and the development of girls and women as leaders. She has mixed her skills and passion to mentor young women throughout her career, both personally and professionally.


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