Kooy has often been a spokesperson for First Nations communities on social justice and sustainable development projects. She was the communications lead for a project led by the Stk’emlupsemc te Secwepemc Nation to successfully reject the KGHM-Ajax copper and gold mine in Kamloops. She worked to help bring Chiefs’ views forward to the United Nations about the impacts of the Mount Polley tailing ponds spill on their local environment. She has also attended a number of climate strikes in Victoria and written op-eds for local press on environmental issues.

Kooy is a member of Samahquam First Nation with strong family ties to Stswecem’c Xgat’tem. As Co-Chair of the Assembly of First Nations Annual General Assemblies and Special Chiefs Assemblies, Kooy has facilitated in-depth discussions between First Nations Chiefs and with the Prime Minister and other Ministers.