Lennox was awarded the Holloway brooch and Hunger Strike Medal for her activities. In Cork she founded a local WSPU branch. However the First World War interrupted the suffragette activities. Lennox went to France to assist her friends Henry and Agnes Harben who had turned their hotel, the Hotel Magestic, in Paris into a hospital. Her brother was serving in the war and Lennox acted as nurse and administrator in the hotel. Her health was seriously affected during her time there and her brother died during the war. Lennox was awarded the 1914 Star.
