I wonder whether she doesn't show the bag because of past history. The dog can't be deemed counterfeit.
According to this post from January, 2014, the seller had listed fakes in August and October 2013.
http://forum.purseblog.com/coach-shopping/authenticate-this-coach-818914-656.html#post26059536
I see your pocket dog and raise you - Barbie
http://www.ebay.com/itm/COACH-Vinta...323?pt=US_CSA_WH_Handbags&hash=item43c8f91e93