Thanks to everyone who left comments regarding Miss Bumby.
Vet called and said that they put a scope down her throat and there was no obstruction! Just very swollen and red. Hmmmmm. A mystery to solve. Bumby is on some meds to help with this and will go in for a recheck on Monday.
I have a feeling Bumby ate something she shouldn't have.... and I have a few samples of things I suspect to show doc on Monday.
Thanks again. Going to pick her up now.