That's the Stephanie Plum series, right?  I'd bet she already has some of those, but it's a good suggestion.  Anything else in that vein?
I know this would be more useful if I could say "She definitely has...", but I'm working off my memory of her bookshelves.
	
 
		
		
Jennifer Weiner's Good In Bed is funny and intelligent; don't be put off by the chick-lit cover.
	
 
		
		
That's the Stephanie Plum series, right?
Yeppers.
I'm looking forward to seeing the other responses, m'self. [snags the Weiner suggestion for the library list]
	
 
		
		
Can I give my mother a book called "Good in Bed"?  Hmm.
	
 
		
		
I'm imagining going up to the librarian and saying, "I'm looking for a particular Weiner," now.  
Simple joys.  
	
 
		
		
I second Good in Bed in the "If You Like Jennifer Crusie, then you'll like...." area.  I liked another Jennifer Weiner more, I think it was called In her Shoes or In my shoes or something about shoes....
	
 
		
		
I know, not Kristin, but it was sitting right there.