Looking for Answers about Overseas Missionary Felwshp The Promise #2?

One disappointing night Mary makes a promise to God. Little does she know, it will carry her half way around the world and throw her into the hands of the communists! Mary's promise takes her to China in 1947, just two years before the communist takeover. As her life gets more and more restricted, Mary struggles to stay true to her promise--and to be thankful in everything. But it is this "thanksgiving key" that will open the door to freedom.