Initially, Kathryn thought that Sam was going to open the door for her when he moved towards the passenger's side of the car, so she didn't think anything of it at first. However, when she saw the cloth he was pulling out of his pocket, coupled with his rather sinister and ominous sounding words, she suddenly realized this was definitely a mistake.
"Listen, I'm not into that freaky stuff, sweetheart," she said, her expression screwing up a bit as she began to slowly back away. "You want to find someone else to drug up and drag off, that's fine."