I'm so sorry...but Gabby has an awesome bean who is on top of things. Fluids can make a huge difference, as can getting her BP controlled. In fact, when Trix was first diagnosed with CRF, getting her BP down improved her kidney values from Stage IV to Stage III. For her, she gets a combination of amlodipine (I know that didn't agree with Gabby) and benazepril. For her binder, I use Bock Labs ConSeal AIH rather than the powdered binder - Trix definitely eats much better with the ConSeal than she did with the powder. Also, I religiously give her 5mg Pepcid BID and cerenia every 24-36 hours no matter what (I follow a tight insulin-like dosing schedule with these meds), to stay ahead of tummy acid and nausea, and to keep her eating. It seems to work well - she's going on almost 2 years now with barely-functioning kidneys with a relatively "normal'/high QOL. She sometimes has minor appy issues, but rarely gets sick or flat out refuses to eat. Of course she does also require plate-holding, but what can ya do?
BTW, at least for now, the best prices I've recently found on fluids is through Valley Vet Supply. I haven't been able to get them locally myself, but I know others have....
With all that said...as backwards as it sounds, I hope it's an infection that can be cleared up with ABs......