I pretty much assumed this during the scene you mentioned when Sophia's father asked her to "stay with daddy," but yes her mother confirmed it in the church.
Daryl is my favorite right now. Michonne will probably be one of my favorites too; I just wish they'd hurry up and add her.
I don't like Lori at all. I do like Rick though and her death would probably be more than he could handle.
Shane is CrAzY and makes me fear for Rick's life and everyone else's now that I think of it. He made it clear to Lori that she and Carl are his only concern. And maybe it's just me, but I think Lori still wants Shane.