Hi Tony, I hope it all goes well on Friday.
The alarms are great but as mum has become more poorly we had a financial assessment done and upgraded that alarm to a Telecare System which will go off if she falls and can't press the button. They can be set to detect smoke too.
Does she have a key box so the emergency services can let themselves in if you are not around?
You may want to access an OT via Social Services Adult Care to do another assessment before mum comes home, it might be that her home now needs further adaptions to help prevent falls. Over 20 years of mum's many and varied illness we have gradually added on everything from commodes, to raised toilet seats, a wetroom (she can't life her legs to bathe), they made two handles (bannisters?) not sure of the right name for them, but she can hold on to them to get from her back door to her garage with both hands. They raised her seating chair and when she started falling out of bed she got a hospital bed to replace her electric one which had become dangerous for her.
The Fire Service will give a full safety check too for free too and put in fire alarms or upgrade current ones if they feel it is necessary.
Please forgive me if you've done this already done all this, I only mention it as Mum's had been added to as her condition deteriorates sadly.