In December 1991, Beverly Holmwood, Petten's partner of 20 years, died of hepatitis C. The disease had been the result of a needlestick injury from a contaminated needle while Holmwood was working as a nurse at the Royal Jubilee Hospital in Victoria. In November 1992, Petten won a landmark ruling against the British Columbia Workers’ Compensation Board, who had initially refused her a survivor’s pension, and was the first in Canada to receive same-sex benefits from the board.
In February 2009, Petten received a left ventricular assist device as treatment for her progressive heart failure. When she died on May 22, 2014, she was the longest surviving recipient of such a device, having had it for 5 years. In 1999, Cynthia Petersen, a lawyer based in Ontario, wrote about Petten's case in a chapter of the book Laboring for Rights: Unions and Sexual Diversity Across Nations, edited by Gerald Hunt, entitled "Fighting it Out in Canadian Courts."
In addition to this interview, the Shirley Petten Collection has been digitized and hosted by the SFU Library's Digitized Collections. The collection was made available in part through the financial support provided by numerous donors through the crowdfunding efforts of Cameron Duder. The Shirley Petten collection consists of records relating to the life of Shirley Petten and primarily to her personal activities. These records primarily document the illness and death of Holmwood and Petten's subsequent legal battles with the WCB and the Greater Victoria Hospital Society to gain a survivor's pension.