In August 2018, she was re-elected to the Legislative Council to fill the casual vacancy caused by the resignation of Mehreen Faruqi, who had replaced Lee Rhiannon in the Australian Senate.

[5] While heading up the Council, Faehrmann launched the Walk Against Warming initiative,[6] an annual community call to action on tackling climate change, which drew crowds of tens of thousands in Sydney in other cities across Australia and the world.

Following the 2011 state election, Faehrmann published a controversial opinion piece in the Sydney Morning Herald in which she was critical of the Greens' campaign strategy.

Climate change, the loss of native plants and animals, the need to foster healthy communities, the reduction of air and water pollution, and the creation of a sustainable economy, are urgent challenges.

Dental Health, Drugs and Harm Minimisation), Roads and Ports, Status of Women, Sexuality and Gender Identity, Multiculturalism and Animal Welfare.

[10] On 25 May 2015, she was announced as the Chief of Staff to newly-appointed Greens leader, Richard Di Natale,[11] but left that post in March 2018, reportedly aiming to take the soon-to-be-vacant seat of Mehreen Faruqi in the NSW Legislative Council.