If I may speak up here. No matter the distance, you can still help. My FIL had bad fall in his home. He managed to phone us. Hubby then phoned for medical help. Ambulance arrived at FIL'S house and we were kept up to date after he was admitted to hospital. We were told there was no need to come down until morning, which hubby did. Distance 160 miles. I can understand not answering your door to someone after 9pm, but not the phone. If someone is phoning later at night, you can be sure its with good reason.
FIL had his council house adapted when he moved in. MIL had had a stroke & was not as mobile. No problems. I even phoned once to get a window fixed for him as wood had rotted & wind/rain were getting in.
Councils are happy to help where necessary.