Caroline was actually nervous about meeting Klaus. She didn't know that she wanted to get into the whole thing with how her mom had died and she'd turned her humanity off. She already had enough guilt from that and the last thing she needed was for Klaus to be judgy about it. But she missed her mother, and not feeling for that amount of time...it would have been fine if Stefan hadn't been a jackass. She didn't like when things were not under her control. And she'd definitely been out of control. It was not one of her finer moments.
Those thoughts left her when she opened the door and saw Klaus standing there, cocky as ever. She resisted the urge to roll her eyes. She told herself she was perfectly capable of being in his presence without anything happening. They'd said goodbye and gone their separate ways, but now they were in the same place and it would be harder.