"Here we go again… I’m sorry I’m not as smart as you… I’m sorry I’m not perfect… There! I said it… Sanctimonious bitch!" Rebecca, Scene IV.
Rebecca is going through a particularly intense rebellious stage, though both of her parents clearly care a lot about her. Rebecca perceives her parents as being focused on their work and Catherine, while ignoring her. It takes the abandonment of her supposedly caring boyfriend to snap her back to reality and make her see where her life is going.