In the Season 4 episodes "Infected" and "Isolation," our group of survivors are dealing with the threat of an unknown disease that is sweeping through the home they'd made for themselves at the West Georgia Correctional Facility. Carol, of course, is determined to stop this infection by any means necessary. Ultimately, that includes murdering two people who she believes to be infected, newcomer David (Brandon Carroll) and Karen (Melissa Ponzio), Tyreese's (Chad Coleman) girlfriend. Carol murders both of them in their sleep and then burns the bodies without telling anyone.
It's easy to see from the plot description why u/DaJesuZ on the r/thewalkingdead subreddit was appalled by the character's behavior. In their thread titled "I can't stand Carol," u/DaJesuZ had many things to say about the character. Of her decision at the prison, they wrote, "She intended to let Tyrese never find out about what happened to his partner. That was cold ..." Carol indeed stays silent, even when she watches Tyreese attacking Rick (Andrew Lincoln) because of his grief over Karen's death. Carol never confesses to anyone until she is pressured to do so by Rick. As u/DaJesuZ writes, "It was only when confronted with the possibility that her life was going to end shortly that she let Tyrese [sic] know the truth." That genuinely feels cowardly for such a supposedly courageous survivor.
