S05E09: The Wedding

Adam finally asks Mary to marry him. She begins having second thoughts when her parents starting talking about being grandchildren and how hard it was to keep track of Mary when she was little. Mary begins to wonder if she could take care of a child. A blind child gets caught in a dust storm and is found by Mary and Adam. After this, Mary realizes that she has nothing to worry about. They get married by Reverend Alden.