Answer:
1. From what she says later in the story, it's highly likely she's gone through the same problems and maybe even done the same things Roger has done, and wants to have the chance to teach him the wrongness of his actions and set him on a path of redemption.
2. She was young once and did not so good things ; To teach him a lesson and teach him right from wrong ; He'll think twice.
3. After Roger tries to steal her purse, Mrs. Jones tells Roger that she was young once and wanted things she could not get. This surprises Roger. He realizes that she understands his longing better than he thought.
4. The main themes of the short story “Thank you, M’am” by Langston Hughes are trust and dignity. In what follows you can read an useful discussion about these two themes.
Step-by-step explanation: