Thanks everyone for the words of advice and encouragement. I'm not sure whether to try her again in her bad, or to wait for a new one.
I have this bag in purple:
http://www.glamourdog.com/glex.html
She seems to be fine tonight. A little on the tired side. I did take her to the T-ball game this afternoon and she was fine - barking at the other dog and looking around for more Yorkies, her normal self
I think, more than anything, it spooked me because this was her first health issue. She's been fit as a fiddle other than this!