I'd say Rebecca for her hostility and then sugar coats it in episode 2.
Second thought, I just thought about Christa. I forgot how nosy she is on Lee and Kenny's business and how she would vote out Ben back in episode 4. She wasn't even there when it happened and she acts like she can get involved until Clementine opposed the vote. Like what Lee said in episode 3, she should just mind her own damn business.