Final answer:
The woman's therapist who has written her a prescription for antipsychotic medication is most likely to be a psychiatrist.
Step-by-step explanation:
The woman's therapist who has written her a prescription for antipsychotic medication is most likely to be a psychiatrist. Psychiatrists are medical doctors who specialize in the diagnosis, treatment, and prevention of mental health disorders. They are the only mental health professionals who can prescribe medication to patients.