@momhascancer, This is such a tough time. I can’t image what you and your mother are going through. Hospice can be very helpful and should be involved, in my opinion. The earlier they are involved the better, it gives them a chance to get to know you both and they can help with symptom management and comfort.
I have a similar NSCLC mutation (ALK stage IV) and I’ve seen it progress very quickly. Two months is a significant amount of time with an aggressive cancer. Based on her symptoms at this time, the cancer has likely spread. Please take care of yourself, you can do that for her. And try to remember that there is a certain power for her in being able to have some say and control in refusing further treatments. Cancer takes so much from us.
Has her oncologist referred her to hospice?