Carol didn't want to mother hen him, because she was sure that was both annoying and uncalled for, so she kept her annoyed face to a minimum. He was a grown man and she did not need to be worrying about him.
There was a slight laugh at his question while Carol tried to think of the best way to answer it. "It's the first real chance we're getting to have it," she replied. "I don't know... everything was so crazy with Kahn, but I felt like we.. hit it off, you know?"
It was her way of saying that she was fond of him. She found his pessimism and dry humor amusing.