Did you notice all of that during the show, or did you watch the Talking Dead?
I noticed the blood stains from the body being dragged, and I assumed the humans had to drag her body to get it out of the room and out to the grave. The director said that the bloated zombie did it, but when did the zombies start dragging bodies around?
I also noticed that the bloated zombie's chin had something on it, but I didn't realize that it was hair. Finally it just never occurred to me that a zombie could eat an entire human, including large bones, that quickly and with the only effect being a bloated stomach. So, if I hadn't watched the Talking Dead, I would have no idea what happened.
I felt like the director thought he was really clever with his clues about what happened to Lori's body, but none of them made sense, so I just missed them.
Overall, I thought this episode was a disappointment. There wasn't much real tension or drama, just silly "mysteries" that the characters don't even care about.