Dont rely on google for such important answers. You need to ask a healthcare professional perhaps the oncologist or her GP. They will talk quite frankly with both of you if you just ask. No one knows how long a person will survive, but you can get an approximate idea. It is completely normal to be very tired with cancer and sleep a lot. Your mum is very ill and her body is using all her energy to fight it, plus the cancer uses up a lot of energy multiplying itself. At the hospital there are support services who can help you in practical ways and answer your questions and give you moral support. Give the hospital a call and they will tell you what is available in your area. I wish you and your mum all the best in the difficult times ahead.
 

Hi Looloo,

So sorry your mum is so poorly. Youve both had a huge shock and your minds need time to process this. its so frightening. we are all scared stiff when waiting to find out the details. Perhaps your mum is just sleeping because of the shock. Speak to the nurse assigned to your mum and see if she can offer you any help and advice.

Wishing you both well

Aemi x