Monday came and Cayenne went back to school since her leave of absence was only approved for one week. She has to resume her study and make sure that she won't fail. It was her last year and she needed to make a lot of projects and take a lot of exams, and she has to get higher grades than her classmates to make up for her absences.
Truth be told, she didn't have to do this because Stefan could take care of her for the rest of his life. But Stefan, knowing his wife, he insisted to let her finish her degree. He was worried that her insecurities would act up again and caused another bouth of depression. He didn't want that. Who cares if he spoils her so much? He's spending his money anyway.