Final answer:
Roger is scared at first in Mrs. Jones's home due to the unexpected kindness after his theft attempt, fear of punishment, and feelings of guilt.
Step-by-step explanation:
In the story "Thank You, M'am" by Langston Hughes, Roger is scared at first in Mrs. Jones's home because he finds himself in an unfamiliar situation after trying to steal her purse. Roger likely fears punishment or a call to the police. Additionally, his conscience might be troubling him for trying to steal, and he is now in close quarters with his would-be victim, who has shown an unexpected kindness by bringing him into her home instead of reacting with anger.
Mrs. Jones's intentions are initially unclear to him, and this uncertainty can be intimidating. The situation is complex for Roger because it involves an unusual mixture of fear, guilt, and vulnerability.