Lee is the Australian Greens spokesperson on animal welfare. The Greens are the only major party to have such a specific portfolio responsibility. Before being elected to federal parliament Lee was a Greens MP in NSW Parliament for over a decade, where she also held the animal welfare portfolio.
Lee is currently campaigning on a range of issues, from banning live exports to protection of native species, more humane laws governing factory farming and empowering consumers to eat more ethically by ensuring proper labelling. Lee is excited about the surge of interest from the community in animal welfare issues and believes that by working with the community we can help drive shifts in government policy to achieve animal rights. She is a member of the Vegan Society NSW.