Short story 'The Christmas Snoop' can found as part of the yearly Advent Calendar package over at Dreamspinner Press.
Cue clicky link:  http://www.dreamspinnerpress.com/store/product_info.php?products_id=3338&cPath=62_702
The story will be avaliable for purchase individually some time in December.

Edit: Story can be found for sale individually at    http://www.dreamspinnerpress.com/store/product_info.php?products_id=3412&cPath=62_702