Final answer:
Marie, an RN, should clarify the information provided by the surgeon to ensure Ms. Allen fully understands the amputation procedure.
Step-by-step explanation:
In this scenario, Marie, an RN, should recognize that there is a miscommunication between Ms. Allen and the surgeon regarding the extent of the amputation. Marie's next step should be to clarify the information provided by the surgeon and ensure that Ms. Allen fully understands the procedure that will be performed.