Might have had some stuffing caught in her airway on the vocal cord or tonsila area - think of a hair in your throat for an example.
It should pass through but if you want to help it pass you can add some cooked sweet potato or plain canned pumpkin to her food as that fiber will help push things through with a bulkier softer stool as the fiber holds fluids.
They do make toys with squeakers and no stuffing.
Often they are frisbee shaped - this site had some last time I looked
www.petextras.com.
I think you are fine with her just watch for stomach pain, inability to pass stool etc over the next day or so.
Hope this helps you! and that not too many more gray hairs were added during that trip to the vet!
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