Hartley Wintney Graveyard - Sophie freaking out!

The weather was gorgeous today so I wanted to go somewhere different so I visited the graveyard. This is Sophie's first time and she really freaked out. She started getting jumpy as soon as we got there, sniffing all the graves in a scared way and then started crying! It was so odd. My other dogs didn't act any differently. I think she has heightened senses and could either smell the dead people or she senses them. So odd! Anyone have any experience with this?