The Only Woman at Gallipoli

In November 1915, a woman appeared amidst the fighting at Gallipoli. She laid a wreath on this grave and then disappeared. It was the grave of a hero - a man killed at the landings and awarded the Victoria Cross. There were two women who truly loved this man. Was the visitor a dedicated nurse and hospital founder who saved the lives of thousands in a fifty-year career, a woman awarded medals by Britain, France and Turkey?

Or was it a famous explorer, fluent in Arabic and Persian, a friend of the famous including T.E. Lawrence and Winston Churchill and the only female delegate among thousands at the Paris Peace Conference of 1919?