Read the following context and choose the best option to answer the question.
Context: For the rest of my life , I will regret killing you . I did it to save my own life , but I still hate myself for it . It 's just another thing I ' m going to have to live with and another part of my soul I ' m never , ever getting back . And I hate you for that . " She drew a deep , shaky breath .
Question: Why does the narrator carry such overwhelming guilt and shame ?
Options: 
- They killed someone .
 - They stole from someone .
 - They laughed at someone .
 - None of the above choices .


They killed someone .