A 24-year-old woman is referred to an outpatient psychiatric clinic after discharge from a medical stabilization unit where she was treated for anorexia nervosa restricting type. Her current BMI is 16.5 and she has been medically cleared for outpatient treatment. She reports persistent depressive symptoms including low mood, anhedonia, worthlessness, and passive suicidal ideation without plan or intent. Her PHQ-9 is 18. She is engaged with an outpatient eating disorder treatment team including a therapist specializing in eating disorders and a registered dietitian. The PMHNP is developing the psychopharmacological component of her treatment plan. Which approach is most appropriate?