Lizzie also is very sure Sasha is dead. She also shows a disliking towards Tyreese. After Lizzie kills Mika, Carol and Tyreese realize that she is too psychotic to be kept around & had to be executed in order for Judith to be safe, so Carol leads her out to the fields to look at the flowers, and as Lizzie tried to apologize for having threatened Carol and Tyreese, Carol executed her.
Lizzie
Carol