I'm sorry.
Pancreatitis is very common in Yorkies.
Any fatty food can potentially set it off and now she won't be able to have any of it. She will be put on a very low fat food.
There are two types, acute and chronic.
Both can be serious and she will always be susceptible.
It is best to leave her at the on an IV.
Anything by mouth (food or water) right now won't do her any good.
I'm not sure why it would cost $800 for one night and some tests though.
A blood panel and then Spec cPL would be about $200, then hospitalization and IV.