The expected anger, when it came, was not quite as intense as it could have been, all things considered. She was being snappy, sure, but it didn't feel like she was going to bite his head off at least, so there was a small positive in the mostly negative situation. When she told him to sit down, he hesitated for only a moment before doing so, slipping into the seat opposite her, albeit with an unnatural rigidity to his posture. While he might have looked like a man, everything about his body language was more akin to a bird that was entirely too uneasy to settle on its current perch.
"I'm still an angel, and you aren't warded against us. It was simply a matter of knowing who to look for and then... being where you were. It is difficult to put into words." He responded, looking just about anywhere but at her, because he knew he had a tendency to stare to the point of making people uncomfortable at the best of times. When a tired looking waitress approached the table, he politely accepted the coffee she poured him, although he made no motion to drink it, even for the sake of appearances.
Finally, he realized that his quickly darting gaze might make the situation even more uncomfortable than if he were to look at her, and he did so. After a few seconds of simply staring in silence, he began to adjust to the sight of her. This was not really his daughter. He could manage this just fine.
"I'm not here to lecture you. I just offered to find you for your father. He was worried sick, and I know what worry feels like. If I was capable of finding you, I had to offer." He paused, making a conscious point to look down at his coffee for a moment before looking up at her again. Even as a human he had retained the tendency to be what Dean liked to call a 'close talker', and it had gotten considerably worse now that he also needed to physically remind himself to blink.
"All I ask is that you go home, or at least call someone in your family to let them know you are safe." He paused again here, unsure of if he should confess this last part, before deciding that honesty was best. "Though if you don't go home, I'm afraid that I will have to insist on keeping an eye on you. It really isn't safe for anyone to be out alone at this late an hour."