How do you solve a problem like my mother?

So blogettes, we have a conundrum. Ma is in a major snit this morning because she's been awake for 'hours' (see previous blog post about time awareness). She is currently refusing to take any medication and blaming me for everything. Eh well, that's not new.

I have no doubt that she has been awake for a while, she doesn't move about very much and goes to bed at 6pm at the latest so is bound to be raring to go at an ungodly hour. But any attempt to keep her up longer is flatly ignored/refused/rebuffed.

Given that she can't walk very far at all, how can I get her to expend some energy?

I know she gets up in the night and I don't always hear her (although I do my best, I need an old fashioned baby monitor I think). This morning when I went into her bedroom she is huddled under her dressing gown on top of the bed so she's clearly been up. That and the fact that her slippers are in the bed. Big clue.

I'm breaking out into a cold sweat imagining her falling and me not hearing her. I notice she's started carrying her zimmer rather than using it for support, is this a good thing ie she's getting stronger? Or is it foolish and far too soon. Either way, she won't be told about using it properly and I'm not convinced it's stubborness, more likely that she can't remember how to use it. But it certainly increases the risk of falling in the night.

Any ideas?