What are the chances she'll live?

My chinchilla is dying.

I posted the other day about her showing signs of tooth problems. It took a sudden turn for the worse and she's laying there, breathing, but unresponsive. I don't know if there's something else wrong too, but there has to be, this happened so fast...she only just started showing signs of having something wrong on Friday. The vet offices were closed over the weekend and mom and dad worked too late to bring her to the vet yesterday.

Dad called one vet today, they wanted $80 to put her to sleep, charging us an extra $50 just for walking through the door because we had never brought her there before. That's preying on our misfortune. Its BS.

We called another vet, explained the situation, and they immediately set us up with financial and and she has an appointment at 8 tomorrow morning. They're going to do a mouth exam to see if its anything easily fixable that she could recover from, and if its not, they're putting her to sleep.

I have my doubts as to whether or not she'll be alive tomorrow morning, and even if she is, if she'd survive the exam. She'll have to be put under for the exam. I don't think she'd survive it.

What are the chances that a chinchilla that seems to be dying already would survive being put under for a mouth exam? Please be honest. I'm not holding false hope. I know the chances are probably slim.