Can someone help me? My grandma has cancer!!!!?

FRIG im sooo sad. My grandma has been in hospital for a couple of weeks. she got diagnosed with leukemia and it was treatable with chemo tablets so it was ok, she would get better. but she is terrible. she as lst sooo much weight, has sweats,loss of appetite and pain. Then a doctor diagnosed her with non hodgkins lymphoma after doing tests. apparently this is not looking good for her as she is old and too weak to endure treatment. he said she has 5-6 months to live. WHAT TO DO, WHAT IS THIS DISEASE AND HELPPP?