My mother in law is 90 and has been in the hospital , including icu all week. Diagnosis: diverticulosis and is still bleeding . Has had colonoscopy, upper and lower GI , ct scan. She has a second active bleed. Hemoglobin goes from 8.6 down to 7 within 8 hours. Has received 8 units of packed red blood cells but now is so weak and Her coloring does not look good . They want to do another colonoscopy on Monday to defect douce of bleeding. We are worried she won t make it through procedure. What should we do?