Thank you random house for the review copy of Show Don't Tell. I have adored Curtis Sittenfeld and her messy but ultimately lovable main characters since I read Prep in the early 2000s.  I remain a Lee Fiora fan and I can't tell you how excited I was to discover one of these short stories returned me to that character and that world.  That alone made this a standout collection!  Sittenfeld is expert at the little turns in plot, the curves you can't predict because life is unpredictable, and she takes those curves, makes them work, and does so in short story form, telling a complete story in small space.  
But overall what is the win is the writing once again, the way Sittenfeld has me embracing my flaws, celebrating my own messiness and realizing that is just who I am, and that there is a little joy perhaps, a little rebellion, in being 100% exactly the messy woman that I am and the woman I am meant to be.