An 89-year-old female presents with multiple bruises on her face and upper extremities. She lives with her son, who tells you that the patient is always falling down and is just generally clumsy. The patient appears malnourished and frightened. She cowers when you approach and is reluctant to allow you to examine her. Her son seems to be hostile toward you and your partner and nervously attempts to explain each bruise. In this case you should do all of the following except: