Resistance
Louise and the unborn child fit into the story via being an element of foreshadowing that Gale's actions have more consequences than he would like to admit. He thinks he can leave Waterloo and go back whenever he is done with his business in Montreal, but in reality there were many people who depended on him. He let down the original trio, and is denied the chance to truly make amends. All he can do is salvage the relationships he has with the new trio.