I highly recommend keeping a detailed list of your mom's daily eating habits for a week before seeing the renal dietitian. That list was a great help to my dietitian when I last saw her and she was able to tell me exactly what I needed to cut back on and/or drop completely. She was also able to see what I liked to eat and make suggestions for alternatives so I wouldn't feel disappointed to drop certain foods. Water intake is extremely important, as is both getting enough sleep and exercising. I wish you and your mom a productive appointment with the dietitian!