Her gravestone says Boe. However, as we all know, the name definitely might have changed! I do believe that this is her, as I have since found that her father's name was indeed Dominique. She, her son, Gerard, and her daughter Evela are all buried in Paulina, La, at the cemetery behind St. Peter Chanel school (I think the church is St. Joseph's but it's been years since I've been out there).
Since you have her maiden name as Bourg, I wonder if it was a shortened for of Bourgeois? Hmmmmm...... the plot thickens!