I wonder if she was having a reverse sneezing/breathing attack...do you know what those are? Check out this thread and the videos to see if it sounds like this:
http://www.yorkietalk.com/forums/die...d-trachea.html
I'm also a bit concerned that she could have kennel cough. Did you get her the kennel cough vaccine? Bc if you get the vaccine, it can actually
cause her to get kennel cough.
The last thing that came to mind is whether or not she had an incident of refux while playing...I think this would be unusual in such a young pup unless perhaps there was something wrong structurally w/ her soft palate.