Was She Shot in the Grave?

The second bullet entered the left side of her neck, which sounds like below the first shot, below her jaw, and exited again by her right ear. So it looks like he took two quick shots, and she was probably moving the whole time, wouldn't you think? May be on the run. I'm also wondering what she placed in the grave and then shot twice. That doesn't make much sense to me. It got caught in her hair, he got it off her body, but that doesn't mean it was caught inside her body, is that right?