You can prevent it from getting worse by ensuring she’s kept dry and clean. I found for my bunnies incontinence that towels over puppy pee pads worked like a charm. There is no need for free run if she is losing mobility so I would use cubes to make a small enclosure, cover the floor with puppy pads and towels. This is not a week long coverage-you will need to change the bedding twice a day at minimum. If you buy the biggest box of puppy pads your only looking at 15$ or so dollars a week (for me in 1/2 a bedrom) in pads, and a load of towels a day if you have a big washer. It’s a lot of work but it will keep her comfortable-even the elderly don’t like to be dirty
So I didn’t read right-was the kidney values up in the past or now when you brought her in for incontinence? I just couldn’t clearly tell if she’s been seen in the past day or two for this issue, or if this was something found in the past?