Oliva,
So sorry to hear about your sister. You might try to get your sister to
investigate alternatives -- one place to start might be Dr. Lorraine Day's
site --- she claims she cured herself of cancer:
http://www.drday.com/.
Also there is Dr. Burzynski at www.cancermed.com
She might also go to alternativemedicine site for referrals.
Definitely tell her to get off the carbs and to eat fats -- cancer cells
can't metabolize fats well -- that's why they rely on sugars.
Namaste, Liz