You have to accept what is and not dwell on the what could have been.
Contact the cancer center near you for answers. You can contact the Cancer Treatment centers but they are located in several areas of the country and the costs may be prohibitive.
Spend the time you have enjoying each other and doing the bucket list. Don't go fretting and worrying. Be positive and have fun.
When your mom does chemo make sure she has a warm blanket to wrap in. Know that there will be times that she will not feel well and that she may vomit. Her taste buds will change as well as possibly sleeping more. If she does radiation she will also be tired and want to rest.
The doctors will tailor a treatment for her and her cancer. No two people react the same way to the chemo or radiation.
I had breast and lump removed 16 years ago and did radiation. Hubby has prostate cancer that spread and his doctor has told him he wants him to have a good quality of life so he has chemo treatments. Right now he is in a remission and enjoying what does.
Become aware and learn what you can do to help mom. But do take care of yourself first.
I will keep you in my thoughts.
the othre S.