80 yr old has pneumonia, chronic diverticulitis disease, acute inoperable cholocystitis, c difficile, did have high white blood cell count but has been lowered, intravenously medicated paracetamolp, antibiotics and saline drip. Sleeps a lot. Eats and drinks very little, a yougurt or 2 a day, has thickener in drinks coz of swallowing difficulties. Hallucinations and alzheimers. We re are struggling to understand her life expectancy as at times she perks right up. Need answers please. Thankyou in advance Diane