The only way for her to immigrate is skilled worker. You might try to get her a work permit, then she could live with you, but if she gets a semi or low-skilled job in Canada, she won`t be able to apply under CEC later. By the way, does she have to declare on an FSW application her marital status? If yes, would it hurt her or Smart later? I mean, they could find out this way as well that he misrepresented himself by declaring to be single.