They established a successful training school, where Leonhardt was able to teach the women some English.
In 1914, the surgeon general raised the number of nurses in Guam in order to increase class size and "to expand training to include tubercular cases and massage therapy."
Starting May 21, 1920, Leonhardt was on temporary duty on board the USS Mercy for its voyage from New York City to San Francisco.
She returned to her regular duties as Chief Nurse on July 18 that same year.
In September 1922, she was ordered to report to the Naval Hospital in Puget Sound, Washington.