In February 1905, Florence needed emergency surgery for nephroptosis ('floating kidney') and was initially treated by a homoeopathic doctor Charles E. Sawyer. His close links with the Harding family, and Florence's total trust and dependence on him, would later prove controversial. Sawyer referred Florence to Dr. Jamez Fairchild Baldwin, who "wired" the kidney in place and did not remove it due to heart damage that she had already suffered. Confined to a hospital bed for weeks, Florence later stated this experience made her more empathetic for hospital patients. During her convalescence, Warren began an affair with a close friend of hers, Carrie Phillips, who had recently lost a child. Florence did not find out until she intercepted a letter between the two in 1911, which led her to consider divorce, though she never pursued it. Apparently, she considered herself too invested in her husband's career to leave him, though her discovery of the affair did not end it. It was one of several adulterous escapades that Warren embarked upon, of which Florence found herself increasingly resigned though she expressed her disapproval. She tried to discourage the affairs by sticking by her husband's side at all times. Florence never spoke to Carrie Phillips again, and only acknowledged her in bitter attacks.