This is a long one, so apologies in advance - I'll try to keep it to the point!
MIL is full-time carer for her mother (nana). Nana lives in her own 2 bed house and has numerous health problems including diabetes, gout, mild dementia, high blood pressure and all the other issue that come with taking many, many tablets a day. She's housebound and terrified of leaving the house. Refuses to cook, clean or even boil the kettle (not sure how safe she would be doing these things anyway - easily confused and distracted). MIL refuses all help with nana. Hates home helps (would like them to come on time at a time that suits nana which is not always possible), thinks meals on wheels is rubbish and is now even distrustful of community nurses.
Friday morning FIL arrived to give nana her breakfast to find her lying on bedroom floor. She'd fallen, couldn't get up and had been there all night (but it could have been only an hour - nana has poor concept of time now). She's supposed to have a panic alarm that she wears on a necklace but now claims it's useless and refuses to wear it.
I'm terrified that the next fall will result in a broken bone or a serious head injury. MIL will blame herself and spiral even further into depression (she's not exactly the picture of health herself - high cholesterol, refusing to take her statin, angina, back problems etc etc).
What can I do? We live in London but PIL and nana live in Scotland. I just want to shake both MIL and nana to make them see sense - they NEED help, before something really awful happens