A 7-year-old girl is brought to the emergency department by her mother who reports that the child has been experiencing recurrent episodes of vomiting and abdominal pain for the past 3 months. The mother seems to be very concerned, and is well-informed about her daughter's medical history. The girl appears to be in good health, and her physical examination is unremarkable. The medical team decides to admit her for further observation and testing. During her hospital stay, the girl's symptoms seem to significantly improve, and her mother appears to be highly attentive and caring. However, some unexplained vomiting still occurs. The medical team becomes suspicious of Munchhausen by proxy, and wants to do more tests to further exclude an organic illness. Which of the following actions should be ethically prioritized by the medical team?