My thoughts: I think she was a zombie when she was found, and Hershel had Otis put her in the barn, same as the two they were wrangling tonight. I think the reason why she wasn't that decayed is that we needed to immediately recognize her as Sophia, since we haven't seen her for several episodes. We didn't remember what she was wearing, etc. Of course, we get the reaction shots from the other actors, but the big reveal has the most impact, so she needed to look like Sophia.
I was kind of glad they released and shot the barn zombies, but I wish there had been more reaction from Hershel and Maggie to the individual zombies. Clearly Hershel's wife/Maggie's mother was one of them, but they seemed to react the same to each zombie that was shot. It was like generic sad zombie death reactions.
I really, really hope Carol and Daryl don't become a romantic thing. I'd much rather see Andrea with Daryl--I liked the way they vibed off each other when they went looking for Sophia, and Shane is too douchey to be her love interest longterm. Plus, he's all obsessed with dumb Lori.
I really wish Lori was played by another actress.