My 88 yr mother has T2 bladder cancer are radiation and chemo worth trying at her age due to the side effects?

Well RO, I think it is entirely up to her. But In my opinion, as someone who had chemo at 48, I can't imagine doing it at her age. It is very difficult and leaves lasting effects. I still have not fully recovered 4yrs later. And by the way, I would never do it again.