Hi, I am dying of ovarian cancer too. I hv tried everything, all the drugs available and radiation, none of them works so far. I hv seem 2 psychotrists before, what they prescripted me did not make me feel better, but I think maybe your mom can try.
As for how I copy with my death, I hv been sick so long, in fact I do not feel life is happy anymore. I am not in pain all the time yet, as soon as I reach that, I will go without any hestation since that is the only way I can rest in peace.
Best wishes.