Isn’t there something sacrosanct about the relationship between a librarian and her patron?  Some kind of confidentiality agreement, or at the very least, something that should discourage her from (loudly) saying something like “Oh boy you are having a rough time!” with a huge smile when I slap down It’s Called a Breakup Because It’s Broken and Jane Austen Made Me Do It at the checkout counter?  Do I need this kind of hassle?

Nope, I certainly do not.