A selfish part of Stefan was relieved that she wasn't from time when she wasn't speaking to him, but he felt immediately guilty for feeling that way. Caroline was very obviously upset about something past randomly finding herself in a graveyard in Kansas. Stefan knew arriving here was unsettling and he knew Caroline didn't have the best experiences with being brought places against her will. He also knew how strong she was, how adaptable. If Caroline was falling apart, that meant something was really, really wrong. Something more than magical kidnapping by mystical seal.
His arms moved around her automatically, as soon as she reached for him. Stefan didn't know yet what was wrong, but that didn't keep him from comforting her. Her hugged her tightly, murmuring reassurances as he rubbed her back and stroked her hair. Even when she pulled back less than a minute later, he continued trying to reassure her. His hands moved to her face and he gently caressed one of her cheeks.
"Shhh, Care, it's okay. You're okay. It's all going to be okay." Whatever it was, he felt confident promising that. Stefan might not 100% return her romantic feelings, but he cared about Caroline and whatever it was wrong, he'd do whatever he could to fix it. Starting with explaining everything about Lawrence to her.
"Come on," he suggested, "there's a diner down not too far from here. Let's go get some coffee and I'll explain everything."