Their oldest child, a daughter named Klotho, was born in 1889 and was primarily raised by a private nurse.

She then traveled for three years, attending courses Newnham College, Cambridge England, University of Geneva, Switzerland.

[3] McGee received her medical degree from Columbian College (present-day George Washington University) in 1892.

As founder and Director of the Daughters of the American Revolution Hospital Corps (DAR), she trained volunteer nurses for army and navy service after the outbreak of the Spanish–American War in April 1898.

[6] With the start of the Russo-Japanese War, McGee led a group of nine volunteer nurses to Japan, arriving in Yokohama in April 1904, and establishing a field hospital for the Imperial Japanese Army.

King, Elizabeth R. Kratz, Adelaide Mackareth, Adele Neeb, Sophia Newell, and Genevieve Russell.

[4] In July, the medical team led by McGee crossed over to Korea and inspected field hospitals in Andong.

[4] The team returned to the United States in November 1904, but McGee remained as a military medical attaché and observer with the Japanese Army in Manchuria during 1905.