Take a deep breath. It's all gonna be okay.

I know what you mean about not trusting your numb hand. Mine has been numb for going on two years now and while I have gained back a lot of use it's still weaker than my other one and I tend to not trust it as much.

Maybe you could find something for your Mom to do that will keep her still and in one spot for a while - or at least till your Dad gets back.

Does she like to read? Or do jigsaw puzzles? What about books on tape? Does she knit or crochet? Maybe ya'll could work on a project together.

As she heals and feels better it will get easier. Can you just explain to her that you're nervous about causing her further injury so she'll understand when you don't want to move her?