Final answer:
The writer reveals that Sasha is not sorry for what he has done through indirect characterization.
Step-by-step explanation:
In the given passage, the writer reveals that Sasha is not sorry for what he has done through indirect characterization. The author does not directly state Sasha's thoughts or emotions, but instead provides details about Sasha's actions and behavior that suggest a lack of remorse. This can be seen in the description of Sasha's calm demeanor and the suspension of intelligent thought in his gaze.