There was something odd about her.

She seemed to be unnecessarily conscious of being alone.
Suddenly she spoke.
"Nice little restaurant, this," she said.

"One of the few places where you can depend upon not being annoyed." Joan did not understand.

"In what way ?" she asked.
"Oh, you know, men," answered the girl.

"They come and sit down opposite to you, and won't leave you alone.