A postpartum mother presents to the healthcare clinic for her 6 week postnatal check-up. During the assessment, she expresses feelings of overwhelming sadness, hopelessness, and guilt. She also mentions a loss of interest in activities she once enjoyed and difficulty bonding with her newborn. Which nursing action is most appropriate for the nurse to take in this situation?

Provide education on the normal and expected emotional changes experienced during the postpartum period.

Ensure she is not left alone in the room with the baby while you prepare to transfer her to inpatient psychiatric care.

Conduct a comprehensive assessment of the mother's mental health and refer her for further evaluation and support.

Reassure the mother that these feelings will resolve on their own as she adjusts to motherhood.