In 1991, Williams moved to Storrs, Connecticut, where she lived with her long-time companion and former manager, Rod Swenson, and worked as an animal rehabilitator and at a food co-op in Willimantic. She explained her move by saying that she "was pretty fed up dealing with people."
A committed vegetarian since 1966 until her death, Williams believed in leading a healthy lifestyle and aiming for self-improvement. She was once featured on the cover of the Vegetarian Times. In her later years, she gave up smoking (which she felt very strongly about and would not allow anyone to smoke in her changing rooms) as well as eventually stopping drinking entirely and never using any other drugs; she also became strongly opposed to the high sugar content in easily available processed foods. Swenson recalls that: "[Wendy] was a consummate professional, always working on her craft, working on the show. She would work out hours every day, she would run six miles a day. She was a total vegetarian, totally into health food. When we were on the road, she always made sure the band was well fed. No processed meats, no white bread". She was known for refusing to wear makeup products manufactured by companies that used animals for laboratory experimentation and she was completely against needless poaching. After leaving the music scene, Swenson and Williams moved to Storrs, Connecticut, in 1991 to live in the geodesic dome house that they built for each other. Wendy worked at a food co-op and became a wildlife rehabilitator to help animals, which she loved since her childhood as she was known for taking in and helping wounded wild animals as a child.