She decided to enter the nursing profession and in 1910 graduated from the Royal Victoria Hospital in Montreal. In 1914 when war was declared, Clint volunteered for duty with the Canadian Army Medical Corps and was assigned to the No. 1 Canadian General Hospital Battalion. She sailed for England on September 29, 1914, aboard the RMS "Franconia". When she arrived she briefly resided at St. Thomas's Hospital in London. She was sent to the 1st Canadian General Hospital in Boulogne on May 13, 1915 where she stayed about two months. She was then reassigned to the mission that resulted in the Gallipoli Invasion in Turkey. She arrived at the Greek island of Lemnos where she was assigned to the 3rd Canadian Stationary Hospital.