err...
i would have had nothing to say to that. how did you manage to get through the rest of the session? (edit: so - kudos to you, kid. i would have sat there in shock & utter disbelief. in fact, my mind is boggling at the though of it, even).
exercise/diet etc are all important and integral parts of managing cancer, but by god that's something that should be coming from your Dr, or someone who is a health psychologist (and who you go to for that purpose).
how presumptive of her! i'd take my money and skiddadle.