After Surgery (TURBT) Bladder not yet healed?

I am the daughter and daughter-in-law of Bladder cancer survivors.  I have been to this web site several times and received some great information to help understand what my family was going to go through and what to expect.  I have a question that I want to see if anyone else has experienced.  My Mother-in-Law had a tumor removed from her bladder and after going back to see how it has healed the doctor said that it had NOT healed completely.  Does anyone have any information that they can share about this?  Thanks so much for help.