In The Walking Dead episode Indifference, Carol tells Rick that
she killed Tyrese's girlfriend.
However, I suspect that Carol might have lied to Rick and Tyrese in order to protect Lizzie.
There are lots of spoilers below, so if you don’t want to see them, close this page now.
Lizzie's beliefs wouldn't prevent her from killing Karen
- Lizzie regards the reanimated condition as just as good as the living condition.
- Lizzie unremorsefully murders her sister, then argues that her sister will be as good as new (so to speak) when she reanimates. Accordingly, Lizzie seems to suggest that she regards the reanimated condition and the living condition as comparably desirable.
- Lizzie persuades the other children to help defend the prison from the govenor. Presumably, any child who feared death would likely not have the courage to do so, so Lizzie likely doesn't fear death. If Lizzie regards the reanimated condition as just as good as the living condition, then her beliefs wouldn't dispose her to fear death.
- Lizzie treats reanimated humans like people treat living humans: She names them, feeds them, and takes interest in their (former) personal lives.
Lizzie's beliefs and predilections would motivate her to kill Karen
- Lizzie believes that people sometimes need to kill others in order to ensure their own well-being.
- Carol taught Lizzie that she would occasionally need to kill others in order to ensure the well-being of the group.
- Lizzie evinces her internalization of Carol's lessons when she persuades the children to help defend the prison.
- Lizzie enjoys killing
- Lizzie mutilated mice for no obvious reason other than for the sake of doing so.
- Lizzie, relatively enthusiastically, volunteered to kill her father (although, ultimately, she reneged).
- In the episode Internment, Lizzie amuses herself with some of Glenn's blood.
Carol's beliefs and dispositions would motivate her to protect Lizzie
If Lizzie killed Karen, Carol would regard herself as blameworthy and act accordingly.
- In spite of the prevailing opinion, Carol teaches the children to kill in order to protect the group. If one of her students did so, then perhaps Carol would regard herself as responsible for her student's actions, and therefore would regard herself as the one worthy of blame.
- Carol's moral judgments seem exceptionally sound and considered. Moreover, she reliably exemplifies the courage of her convictions: she reliably, can, and does, act according to those judgments. It seems plausible that Carol could have concluded that she ought to lie to protect Lizzie, and acted accordingly.
Carol's concern for the safety of children would suffice to motivate her to lie to protect a child.
- Carol's efforts to teach the children to protect themselves evince her concern for their safety.
Did Carol take the metaphorical grenade in order to protect Lizzie?