At first, Dinah did her best to simply pretend that she couldn't hear the conversation between the two brothers. She didn't care all that much if Sam wanted to underestimate her. It wouldn't be the first time someone had. But after a bit, she thought it prudent to remind them that she was still in the room and still had ears.
"I'm right here you know," she said mildly. There wasn't any accusation in her tone though all the same, Sam looked a bit abashed.
Dinah did give Dean a small smile. She'd heard his part in the whole conversation as well and she couldn't help but appreciate that he was willing to stand up for her presence on this particular hunt.
It was at that moment that the temperature in the room took a sharp drop.