Beth is Hershel's daughter and Maggie's sister. She was living with her dad, sister and boyfriend Jimmy at Hershel's farm when Rick's group arrived.
Until then, Beth had been relatively shielded from the apocalyptic world. But when Shanebreaks open Hershel's barn and she's forced to face her mother's death and horrific reanimation, she's driven nearly to suicide.
Since then she's grown more self-assured and become a contributing member of Rick's group. She remains close with her father and her sister and, with their relative closeness in age, she and Carl have gotten friendlier as well.
Beth is a source of optimism and hope for the group, often singing to help boost morale. When Hershel's leg is amputated after a walker bite, Beth chides Maggie for being pessimistic about his chances of survival. She even cuts off the legs of his trousers so they won't drag on the ground when he’s walking again.
Beth devotes much of her time to assisting Hershel throughout his recovery. She also becomes a capable caretaker for Judith after Lori's death. When Carol remarks how good she is with the baby, Beth smiles. "I always wanted a child," she says.