Previously Independent 91 Year Old Mother Chronic Diarrhea For 2

Previously independent 91 year old mother chronic diarrhea for 2 months. Now nausea. No appetite, little food. Low potassium. Some dizziness. Headache. Occasional chills. Hospitalized 1 week. Just released to rehab but in worse shape than when entered. Had iv fluids,sigmoid with biopsy result tomorrow, changed Bp med, ct scan all labs seemed ok. Except sono showed sludge in gall bladder but has no real pain there. Some ongoing back pain long term. Prescribed anti anxiety med, new Bp med and enterocort for diarrhea. Is getting weaker. Cannot think clearly. Very slow