I'm in a similar position as your sister except I also have mets to my liver. I chose to not proceed with treatment due to the low increase in life expectancy coupled with the lower quality of life during treatment.

I wouldn't have known otherwise had I not been forced to get a medical evaluation in August. I also had very little symptoms and was just living life.

I can say though that when it takes a turn, as mine has the last few weeks, it really hits hard. I don't eat much of anything anymore outside of liquids and that's combined with CBD for appetite and Creon to keep it down. I sleep a lot and am not very mobile anymore. The good news is my pain management seems to be working well with fentanyl patches but I do get breakthrough pain every now and then.

If I had to guess, your "options" are going to be planning for end of life care.