I don't know of anything, but I just wanted to post and let you know that I'm sorry to hear about your friend's mother.
Once cancer metastacizes to that degree, it is nearly impossible to treat.
Your friend might look into The Mayo Clinic or Cancer Treatment Centers of America.
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Misty morning, clouds in the sky
Without warning, the wizard walks by
Casting his shadow, weaving his spell
Funny clothes, tinkling bell