Can homeopathy help? Request for advice from experienced practitioners.

My grandmother, Theresa, 83 yo, was admitted to hospital with acute cholecystitis in a bad general condition on 10 April 2019. As a perforation of the gallbladder was diagnosed, she was operated on and the bladder was removed. She was released from hospital after a week. She seemed to recover quickly. The wound was healing well. She did have several vomiting fits, however, sometimes violent. About three weeks following the surgery she developed symptoms of jaundice (yellowish skin, dark urine) and was admitted to hospital again. The bilirubin blood level was very high as were the liver enzymes. She learned then that the histological examination of the gallbladder revealed the presence of adenocarinoma, which was classified as T3. She was informed that the caner had spread throughout the abdomen and that she would be released from hospital in a few days, to receive palliative care at home. No treatment options were suggested. A stent was placed in the biliary duct to relieve symptoms of jaundice.
Regarding her general condition, she has been complaining for a long time of persistent acid indigestion, cold extremities, dizziness related to rainy weather and changes in weather in general, pain related to polymyalgia rheumatica and frequent variations in blood pressure which she had to control pharmacologically a few times a day.
As for her disposition/character, she is very empathic and emotional, on the one hand, sometimes prone to hysteria, but can be composed in a crisis and always makes rational provisions for the future on the other. She likes being outdoors, traveling, contact with nature, sweet food, meat and dairy, and is very inquisitive, willing to learn about the world with a great sense of awe. She is a physician (a dermatologist) and a researcher (histology), and has worked hard her whole life.