I personally don't find that the level of handling directly effects the level of calmness of a snake - I find that age does, however. I've held a very calm adult wild caught snake that before capture hadn't ever been handled.
He didn't get this snake from Petco/Petsmart.
Joey - next feeding offer her one - if she eats it, you can try to offer a second. Did Justin say if she'd ever fed on f/t? Or is that what you bought at the show?