Boudreau is the Petit-de-Grat, N.S., man whose overturned boat was found June 1. The 43-year-old's body has not been found, but three crewman from a lobster boat have been charged with second-degree murder.
RCMP arrested Carla Ann Samson, 37, Friday at her home in D'Escousse. She is in custody and will appear in Sydney Provincial Court Tuesday.
She is the registered owner of the Twin Maggies, the boat involved in the fatal confrontation. She is the wife of Capt. Dwayne Samson and the daughter of crewman James Landry.
The Samsons have twin girls.
Sgt. Mark MacPherson of Richmond County District RCMP said the investigation is ongoing.
"Despite the fact that those arrests were made, our investigation doesn't stop when disclosure is made to the Crown prosecutor and defence. We continue to follow up on any loose ends or minor leads," he said Saturday.
Documents obtained by CBC News show the investigator’s file said 65-year-old James Joseph Landry gave statements to RCMP investigators shortly after his arrest on June 8. His claims have not been proven in court and may not be true, but they do form the basis for the case that is now before the courts.
In the statement, Landry claimed the crew of the Twin Maggies rounded the point off Petit-de-Grat early in the morning and spotted Boudreau in a small motor boat cutting their trap lines.
Landry told police a confrontation escalated and he shot Boudreau with a rifle and then ran over his boat.
Landry, Craig Landry, 40, and Dwayne Matthew Samson, 43, all face second-degree murder charges.