\\\Forgive me Sqad, but what do you mean when you say the prognosis is worse \\\
Prognosis means the outlook and I mean that the "outlook", survival rate is worse in the over 80's in spite of treatment.
The problem is with this age group is that they often have a concomitant disorder (some other medical problem), arthritis or heart problems ect and hence with chemotherapy and its side effects, taxes the spirit and endurance to it's limit, succumbing to infections, low white cell problems and heart and lung complications.
The two main types are Hodgkin's Lymphoma and Non-Hogkins Lymphoma and my comments above apply to either type in the over 80's group.
She will be offered chemotherapy and or radiotherapy but it is unlikely, very unlikely that she will be offered just "popping a tablet."
I am sorry to be downbeat but i would not like to implant unrealistic expectations for your friend, in your mind.