Patient confidentiality
The Girl on the TrainPatient confidentiality is the assurance Rachel Watson relies on when she begins to disclose painful truths to Dr Kamal Abdic. In the novel, its importance lies not in a detailed account of professional rules but in the private space it seems to offer: Rachel believes Kamal cannot repeat what she tells him, yet finds that speaking to him can itself feel like a betrayal of Scott Hipwell.
Meaning and Function
Rachel understands confidentiality as a boundary protecting what she says in therapy. As she approaches the story of Mac and the events before and after her relationship with him, she tells herself that Kamal cannot tell anyone because of patient confidentiality. The assurance makes it possible for her to move toward material she has not yet fully disclosed.
The protection is also personal rather than merely procedural. Rachel says she trusts Kamal and believes he would keep her confidence even if he were able to tell someone. Her sense of safety rests both on the professional obligation as she understands it and on her faith in him. The distinction matters: the rule gives her a reason to speak, while trust makes that permission feel real.
Disclosure and Its Limits
Confidentiality does not immediately make Rachel wholly candid. She admits that she is still holding back because she cannot say everything she feels. Instead, she keeps the men in her account vague and jumbled together, insisting to herself that their identities matter less than how they made her feel: stifled, restless, hungry. The protected setting allows her to approach the truth, but the telling remains partial and controlled.
Her strongest reluctance is not fear of Kamal’s judgment or of what he might do with her disclosures. It is the feeling that telling him what she cannot tell Scott would constitute a betrayal of Scott. That hesitation exposes the difference between professional secrecy and intimate loyalty: confidentiality can keep a disclosure within therapy, but it cannot settle what the act of sharing means to Rachel.
Narrative Significance
The rule helps establish therapy as a setting in which Rachel can begin to speak about the past while still managing how much she reveals. She has already told Kamal about Ben Mills, and she is moving toward the fuller account involving Mac. The progression makes confidentiality a condition for disclosure, not a guarantee of complete openness or emotional resolution.
Rachel’s conflict also gives the rule a distinctly relational weight. She compares this withheld confidence with her other betrayals and finds that it feels worse precisely because it concerns what she considers the heart of herself. Confidentiality therefore protects the conversation without removing its stakes: Rachel can trust Kamal with the truth and still experience that trust as distance from Scott.

