An elderly widow who just lost her spouse

A patient presents to your primary care office today with chief complaint of insomnia. Patient is 75 YO with PMH of DM, HTN, and MDD. Her husband of 41 years passed away 10 months ago. Since then, she states her depression has gotten worse as well as her sleep habits. . Patient currently takes the following medications: Metformin 500mg BID, Januvia 100mg daily, Losartan 100mg daily, HCTZ 25mg daily, Sertraline 100mg daily. How does adding trazadone for insomnia beneficial to the patient? Be considerate of the other medications being taken