I believe that she has Oliguria. It is the medical term for a decreased output of urine. Aside from that, there are many potential causes and the two that we see her are dehydration and a urinary tract obstruction. She is decreasing her normal fluid intake. Your body can't replace the fluids that you're losing. When this happens your kidneys retain as much fluid as they can. As for urinary tract obstruction, she has increased her protein intake. A high-protein diet can inhibit your body from eliminating all the waste products of protein metabolism. This can cause a blockage in your kidneys. This explains why she has flank pain and a high fever.
My guess is A, but I don't know for sure.
Answer:
The central Nervous system gets affected by cocain and then it can lead to brain death. It easily damages the brain cells and then it will lead to death.