So sorry that you and your mom have had some bad news. My case was very similar to your mom's....repeated UTI's that weren't! I am now five years past my diagnosis and cancer free so far and doing great.
A TURB is generally done as an outpatient under general anesthetic. This allows the urologist to take enough samples to allow the pathologist to make an accurate diagnosis as to whether is is, indeed, cancer, and if so, how far into the tissue it may have gone. I was back to normal the next day, but this can vary depending on the patient's condition and on how extensive the biopsies were. To me it was very much like a dental procedure done under a general anesthetic.
Depending on the results, you may very well want to seek a second opinion at a place that specializes in bladder cancer. It you go to our Home Page, in the upper right, you will see a link to Treatment Centers. The Medical University of South Carolina, in Charleston, might be a very good place for you to consider.
Also, it is not uncommon for a second TURB to be scheduled several weeks after the first. The second time the urologist has a better idea of where problem areas might be and can concentrate on those. It was only after my second TURB that we were sure what we were dealing with.
Best of luck to you and your mom...she is lucky to have you!
Sara Anne