First, urine cytology does not provide a real diagnosis, but indicates that further tests need to be done. Most tests for cancer cells in the urine are notorious for being super-sensitive....that is, they often indicate a malignancy when there is none. That is why the report says "suspicious" not malignant. And it is extremely important that your mom be referred to a urologist as her doctor has done.
Nothing more can be determined from this report. The urologist will probably make an initial cystoscopic exam, where he will insert a tiny camera into the bladder and do a visual exam. If this confirms that there might be cancer present the next step is usually a similar exam, but under general anesthesia so that he can remove any suspicious spots and also take samples of the tissue to send to the pathologist. Only after the path report is back (and this can take up to a week or so) will a definitive diagnosis of no cancer or cancer, and what its characteristics may be.
We will be wishing your mom the best
Sara Anne