Yeah, Lizzie is well on her way to becoming a sociopath. It will be interesting to see where they take her characterů. as long as they keep her far away from Judith.
They never really explained the exact circumstances of how Carol appeared. We just see Lizzie trying to smother Judith, cuts away to Tyrese, then suddenly Carol is there holding Judith. Kind of makes me wonder what happened in between. Is Carol aware of what Lizzie tried to do?
Either way, I'm just glad Carol is back.