After the 0700 report, the day shift nurse notices that a patient has a 0730 dose of insulin due and goes to the automated dispensing machine to retrieve the insulin. The nurse sees that the night shift nurse had removed the 0730 dose of insulin, but the medication administration record has not been signed by the nurse. The patient is confused and says she thinks she took it. The patient's blood glucose level is 142 mg/dL. What will the day shift nurse do?