Hello :) Indeed "Belle mère" means mother in law and step mother, thaut uou have to be careful regarding other members of family, for instance: Step brother = "demi frère" / Brother in law = "Beau frère" and the meaning isn't the same as you know :) The same for sisters: Step sister = demi soeur, and sister in law = belle soeur If you need additionnal information don't hesitate to go on: http://bettizpod.over-blog.com/ or to write me email on: [email protected]