Each time Anna moved from her father's world to her mother and Lydia's, she felt as if she'd shaken free of one life for a deeper one. And when she returned to her father, holding his hand as they ventured out into the city, it was her mother and Lydia she shook off, often forgetting them completely. Back and forth she went, deeper -- deeper still -- until it seemed there was no place further down she could go. But somehow there always was. She had never reached the bottom."
-- Anna Kerrigan (chapter 3)

Importance: This quotation illustrates Anna's split loyalties between the opposing worlds within her own family. Accompanying her father on business trips and caring for her crippled sister require radically different skill sets and frames of mind, thus requiring her to hold only one in her consciousness at a time. However, both roles are equally important to her. The metaphor of deeper...