Her name was Sally Canal . . .

 Introvert? I wish! 

If we take the dictionary definition of "introvert" - a shy, reticent person - then they are the lucky ones. Would a shy, reticent person spend the small hours after a book event tossing and turning wondering if they talked too much, shared too much, blabbed stuff they should have kept quiet about . . . ?

Do not draw attention to yourself

They would not. I do. Every time. "Oh my God! Why did I tell that joke?" "Oh my God! Why did I start that story?" "Oh my God, why didn't I ju...