Ms Gilbert founded the Windy Hill Rosalie Bay Catchment Trust and remains a current Trustee. She has galvanised more than 2,000 hours of volunteer time per year to support the Windy Hill Sanctuary. She was a member of the Great Barrier Local Board, a Trustee of the Great Barrier Environment Trust, and a member of the Auckland Conservation Board. She has driven efforts to remove invasive plants and animals from Great Barrier Island. Ms Gilbert is an inaugural member of the Aotea Conservation Park Advisory Committee and a founding Trustee of AoteaOra Community Trust.