This. Go ahead and tell everyone that you are worried about your mother and would like to see her anytime and check on her for your own peace of mind. Post a clear, preferably large, sign up front that there's an active camera in the room. But do not insist on it. That'll tell you all you need to know about the staff very quickly.
For the camera, use a regular old wifi-enabled baby monitor (App-controlled for best results) and connect it to a mobile Internet router. These routers have internal logs - learn how to access them, then check them (remotely, after setting up security in them) at intervals for suspicious reboot events.
Can confirm. That's also why most appliances are surprisingly repairable today. You can just buy used appliances that aren't working as long as it's something minor like leaking or squeaking of a washer, no heating of a dryer, rumbling like crazy, etc. Inside you usually find many parts from Whirlpool and a few other components like Bosch Motors (which often enough do not actually fail). Those parts have numbers you can find for cheap online. Just get a proper(!) bitset with some generic tools and go watch Youtube repair videos. It's too easy these days.
Heck I even bought a completely dead machine where the description clearly matched a note online that a resistor and a single easy-to-solder chip for 2$ total need to be replaced. That repair worked for 5 years until I sold it for a better machine.