Since your bill was over $200, I bet it was done. The blood work would
give you lots of clues as to why your
cat could be
vomiting. It would show liver, kidney problems, and pancreatic problems which could cause vomiting. And, if the blood work showed nothing, your next best bet would be to get an ultra sound done on her abdomen.
You have to find a cause for the vomiting before it can be stopped.