 She joined with fellow NDP MLAs Scott Fraser and Lana Popham, in conjunction with the Western Canada Wilderness Committee, in lobbying for the stop to old-growth logging on Vancouver Island and the Lower Mainland.In the Harmonized Sales Tax debate, Trevena called for the Select Standing Committee on Finance to conduct public consultation across the province but ultimately opposed its implementation on the basis its fewer exemptions compared to Provincial Sales Tax and the increased control the HST would give to the federal government on taxation matters.In November 2010, Trevena emerged as one of thirteen NDP MLAs to call for a leadership convention over the leadership of Carol James.