[The best way to prevent this kind of accident is to place something you value in the back seat.]
Like a baby?
CORRECT.
So she gets paid for fostering, goes to work and leaves the kid in car? Probably too cheap to pay for a sitter.
Hah, I was literally going to write this reply. Cheers! What is more valuable than a baby?
Obviously the poster meant something that you never leave the car without regularly, like a purse or a smartphone, but still...