Oh no, I'm so sorry to hear this. How old is she? Is she going to be on a transplant list, or have dialysis?
My grandfather has been in kidney failure for years. Even though he's old - nearly 80 now - and despite the fact that he has many other health problems too such as heart problems and diabetes, he still has a good quality of life. His kidneys began to fail probably about 10 years ago, I remember him telling me that they did some sort of test of his kidney function, with (if I'm remembering correctly) 1 being perfect kidney function and 5 being no kidney function whatsoever, and he was at a 3.5 or a 4. Then a few years later he had to undergo major heart surgery, and after that process his kidneys shut down completely. He's been on dialysis for about 4 years now, 3 times a week, and he enjoys his life. He watches DVDs and takes naps when has dialysis. He isn't even in a nursing home, he has his own condo and he loves driving his car. Kidney failure has barely slowed him down.
Sorry if that was a long story, but I just wanted to let you know that it's possible for someone to go through this and still live a happy and good life. I know you're worried about your daughter, that's natural. Please keep us updated as to how she's doing.