Cynthia,
I agree with both of the posts above. Go see another doctor. Ask questions and get answers. Your Mom is lucky to have you with her. My husband asked all the questions and helped me make my decisions. I was in too much shock just hearing the words "You have cancer." Keep pushing until you get the answers that you need/want. If you have to travel to another facility to get proper treatment, do it. Your Mom deserves it. If she doesn't want to go, she may be in shock as I was. Push her if you have to. I will never regret the pushing, pleading and explaining my husband put me through two years ago.
Take care and you are in my thoughts.
Anne.