How does Cynthia Voigt use imagery in On Fortune's Wheel?

On Fortune's Wheel is written in third person past tense from Birle's point of view. At its essence, the novel is the exploration of one young woman's growing independence. It recounts Birle's journey of self-discovery, which eventually leads her back to her home. The point of view remains close to Birle, recounting her innermost thoughts and feelings. The reader is aware of Birle's love for Orien long before the Lord is. The reader suspects Birle's pregnancy long before it is revealed in the castle.