I'm sorry to hear about your friend. Hope she'll get better soon.
I wasn't sure if you're talking about GBM or Stomach Cancer.
For Stomach Cancer I would look into these peptides:
GHK-Cu (for 2-3 months)
Endoluten (Pineal Gland) (for 2-3 months)
Vladonix (Thymus Gland) (for 2-3 months)
Ventfort (Arteries) (for 2-3 months)
Stamakort (GI) (2-3 months)
Once she finishes the cycle, she can take them once a week at a higher dosage, until she gets better.
There is no problem combining them together, it's just a matter of finding a high enough dosage that does not cause side effects.
I would start with the ones I mentioned, but there are many more.
Also, I would incorporate low carb diet along with intermediate and prolonged fasting.