While she was not originally one of the available bachelorettes in the game, she became one later with a free update. Stephanie will reside in Westown after she has become available to interact with. She will not participate in any Festivals except for Flower Festival and Winter Thanksgiving Festival. You can have a child with Stephanie and you can get all family events with her, but she doesn't have a spouse exclusive event (that is usually required to be seen before you can get the pregnancy scene) and you can't have meals with her either.