My mum has a new diagnosis. It is not Alzheimers, it is Lewy Body dementia, which is far worse. In short it is like Alzheimers with added Parkinson, and Psychosis, and the progression of the illness is really fast.
Do you have any experience with this illness?
This night she did not sleep a wink. She was up all night,trying to get into the rooms of the other patients. She was aggressive, shouting and swearing, and attacked the nurse. Repeatedly. 
My mum is (or was) a really sweet little old lady. Mild mannered, loving and gentle.
I had her sectioned a few weeks ago, and this morning they have decided to up her care. She will be "sheltered" and have her own nurse responsible for her in the night. They dont want to sedate her until they have had proper time evaluating her and made sure she has the correct diagnosis.