Gladys Aylward

This is the story of how Gladys Aylward, a missionary in China during the second World War, helped Chinese orphans safely across a mountain.
When she returned to England she realised a film had been written showing her life and a book called The Small Woman had been published.
On Google, and Youtube there is a great deal of information about how from her humble beginnings as a housemaid/domestic help became a successful missionary.