Insp. Arsenault joined the Royal Canadian Mounted Police (RCMP) in 1988. After completing basic training, she served at the Constable rank in the province of Newfoundland performing various duties including general investigations and community policing.
In 1991, Insp. Arsenault was transferred to the Greater Toronto Area (GTA) in the Province of Ontario where she worked in various units mandated to investigate Serious and Organized crime major cases. She was then transferred, in 2001, to Cornwall, Ontario where she worked in various units included Proceeds of Crime. In 2004, Insp. Arsenault was appointed as the lead for the Seaway St-Lawrence Valley integrated criminal intelligence unit which was comprised of law enforcement at the municipal, provincial/state and federal level both from Canada and the United States. In 2007, she became the RCMP Human Trafficking National Coordinator at the RCMP headquarters in Ottawa, and oversaw the RCMP Human Trafficking National Coordination Centre.
In 2013, Insp. Arsenault was transferred to the RCMP National Intelligence Coordination Centre (NICC). In that capacity, she is responsible for the RCMP National Intelligence Priorities and the Coordination Unit. In September 2014, she also became responsible for the newly created Cyber Team within the NICC.
Insp. Arsenault is married and has two children.