Final answer:
Parvana feels a mix of emotions including fear and determination when she takes over her father's job and encounters a Talib who wants a letter read.
Step-by-step explanation:
The incident with the Talib in the chapter where Parvana takes over her father's job involves her going to the market, sitting on a blanket, and offering reading and writing services to the people there. Parvana's disguise as her father's nephew, Kaseem, is crucial as her father is in jail and she should not reveal this to anyone. During this incident, when a Talib approaches her for a letter to be read, Parvana experiences a mix of emotions, including fear due to the Talib's imposing presence and the consequences if her true identity were to be discovered, as well as determination to carry on the work that her father had done. This demonstrates Parvana's courage and the responsibility she feels towards her family during challenging times.