Calpurnia would probably find herself a bit conflicted over the news of Tom Robinson's death. As a black woman, she identifies with his race and society's treatment of blacks. However, unlike Tom, she is in the employment of a white man and helping to raise two white children whom she loves. Atticus, Jem and Scout treat Calpurnia as a member of the family, never disrespecting her.
In her reflection, Calpurnia would address both of these feelings. She would address the difficulties of being a black person in the South during times of such racism. She would understand the feelings of social injustice based on skin color. In doing so, she would be thankful that she works for Atticus and wish that more white people would come to his way of thinking. In fact, she would probably feel a source of pride in working for him because of his strong dedication to seeking justice for Tom Robinson.
Remember to write your reflection using first person pronouns. Pretend YOU are Calpurnia.