What is the chance of survival of cancer?

My mother recently just got diagnosed with cancer, she wont tell me the details because she doesnt want me scared and she cries often about it. It is tered to many places in her body (multiple cancers) and I would say it could be stage 3 or 4 cancer. What are the chances she would be able to get it off, using any method such as chemotherapy. She had it cut out of her rectum, she has it in her , and maybe ovary or lung. Forget about the lung and ovary though, is it treatable?