Update:
At my neighbours house, it used to be a Mum, her daughter, and her daughter husband. A few weeks ago, the daughter and husband moved out.
Anyway, a bit of Googling and I found the daughters details online, and I phoned her.
I explained that the garage door and front door are literally wide open, and no cars and such are in the driveway or in the car parking spots (actually been like this all night and all day yesterday). Oddly, she made me feel like I wasted my time contacting her, and showing any concern for her Mum.
I did explain that I was merely making sure her Mum was okay, since the doors were opened and no cars around. Anyway, short version, I will not do that again.
She made me feel like a right pillock.
Apparently, the doors were left open, to air out the painting that had been done.
So, there's that...