Final answer:
The priority rationale for offering a partial hospitalization program after discharge is to provide a structured and supportive environment for Mrs. Chen to continue her treatment and prevent relapse.
Step-by-step explanation:
The priority rationale for offering a partial hospitalization program after discharge is to provide a structured and supportive environment for Mrs. Chen to continue her treatment and prevent relapse. Partial hospitalization programs are an intermediate level of care that offer intensive therapy and support for individuals who require more than outpatient treatment but less than inpatient hospitalization. By participating in this program, Mrs. Chen can receive ongoing therapy, medication management, and other interventions to address her mental health needs, enhance her coping skills, and reduce the risk of another hospitalization.