That is definitely an interesting theory that Carol is covering for the kids, I hadn't thought of that. Especially since she's secretly (although Rick does know now, but Carol doesn't know Rick knows...) been teaching the kids to defend themselves violently, that could be part of why she is motivated to cover it up. That or the kids stabbed them with knives like Carol taught them so Carol burned the bodies to cover it up...
I agree with most of the posts here, the show was a bit more fun when they were roaming around and not stuck in one place. I've thought this season was a bit boring so far, but the scene in the car is certainly a fun one and I can't wait to see what happens next. I can't really imagine in a zombie apocalypse world where all meds are stolen that no one would think to check a veterinary clinic, but we shall see. Hey, I'm mostly just happy this season is governor-free so far. I am holding out hope that this season will pick up.
On a side note, this will probably sound stupid but I can't stand Daryl's hair. He looks like he's trying to be emo. Carol has a more functional hairstyle than he does, it's a little ridiculous.