Born in Joliette, Quebec, she received a law degree from Université Laval in 1969. She is a senior partner in the law firm of Desjardins Ducharme Stein Monast and specialises in corporate and commercial law. In 1984 she was appointed to the Security Intelligence Review Committee which oversees the Canadian Security Intelligence Service and was appointed to the Queen's Privy Council for Canada in accordance with the Official Secrets Act. She served on SIRC from 1984 to 1991 and 1995 to 2005. She served as Chair of SIRC from 1996 to 2005.
Since 1994 Gauthier serves as Honorary Consul General for Sweden in Quebec City.
In 1990, she was made an Officer of the Order of Canada. In 2001, she was made an Officer of the National Order of Quebec. Also in 2001 she was made an Officer of the Royal Order of the Polar Star, by His Majesty King Carl XVI Gustaf of Sweden and in 2008 she was elevated to Commander of that order.
|Chair of the Security Intelligence Review Committee (Canada)