Help Coraline Overcome Her Health Crisis For Disabled Owner

My kitty Coraline has been straining to pee for a little under a week now. This is very rare for a female cat, especially since she's only two and doesnt have any kidney stones. We're currently at the er for the third time this week, and they say we should put her down if we cant get the money. Im disabled and I've already borrowed money from everyone I can, and I hate doing this, but I really don't have any other choice. If you guys can help out, it would really be appreciated, more than I could ever articulate. I'm asking for $2,000 because that's as much as ssi will let me have, but the vet bill could cost more than $2,500

Update: We had to surrender her. We're absolutely heartbroken and are still accepting donations to pay our debts and possibly have someone we know adopt her so she can

at least still see us and her sister. Anything that doesn't get used will either go to her new owner, go into savings so something like this doesn't happen to her sister Betsy, and my other kitty Earl, or will be donated to the Oregon humane society. Thank you again to anyone who already has or will be helping.