
Poor gilrie, I hope she is feeling better soon, that must have been very frightening :(
I had to have my pup rushed to the vets several months ago, his top & bottom eyelids had drooped so far down that your couldn't see eyes and he was dribbling saliva and acting drowzy.
The vets applied a local anasthetic (sp?) to his eyes, then kept him in for a few hours to monitor him. Everything just went back to normal and the vets could only assume that he must have been stung by something/had an alergic reaction to something.
Emergency consultation, local anasthetic, 2 hour stay in the vets = £34 :) (that was during normal opening hours)
EDIT: glad you found out the cause, how lucky she didn't have more of the sausage.