A young client is being admitted to the psychiatric unit after her obstetrician's staff suspected she was experiencing a postpartum psychosis. Her husband said she was doing fine for 2 weeks after the...

A young client is being admitted to the psychiatric unit after her obstetrician's staff suspected she was experiencing a postpartum psychosis. Her husband said she was doing fine for 2 weeks after the birth of the baby, except for pain from the C-section and trouble sleeping. These symptoms subsided over the next 4 weeks. Then 3 days ago, the client started having anxiety, irritability, vomiting, diarrhea, and delirium, resulting in her inability to care for the baby. Then the husband says, “I saw that my bottles of alprazolam and oxycodone were empty even though I haven't been taking them.” In what order of priority from first to last should the nurse do the following?