The urologist will send the tumor to a pathologist who will make the determination of the type (low grade, high grade) and extent of the tumor. He will probably do an instillation of mitomycin (not a pill, but a bladder wash) after removing the tissue.
Once she has the pathology report (and it can take a week or so for it to come back) she will have a better idea of what she might be facing. If it is low grade, and there does not appear to be any spread, the uro will probably just recommend a careful watching regime....exams every three months for a while. If it is high grade and has not spread out of the bladder lining, it may be a recommendation for immunotherapy. But until the path report is back and discussed with the doctor, it is anybody's guess.
There are lots of people on this forum who have been where your friend is and now have many years of doing great with no recurrence. As to whether or not she needs a second opinion, that would depend on the path report and her urologist's recommendations. If it is "garden variety" with no complications, probably not. If it is a complicated situation or the recommendations do not "fit" the diagnosis, then absolutely a second opinion is in order.
Let us know what the results are!!
Wishing you both the best
Sara Anne