I doubt so. 20 years ago everyone was leaving their kids alone, there was much less crime against kids and plus she might had been luckier with the choice of the first moment detective on duty...so maybe she would had been found immediately.
My elder boy will be 18 in September. I never left him alone. Not even to pop to the corner shop for milk. If I were alone in the house with the boys in bed and I needed something urgently (milk for the morning coffee counts as urgent) I'd call my Dad.
I'm 36 and I was never left alone as a child. My parents would get baby sitters if they wanted to go out.
I've never met anyone who says they leave their lids alone. Who is this 'everybody'?
As to your second statement that 20 years ago their was much less crime against kids. That's just rubbish.
What are the worst crimes that you can think of off the top of your head?
For me it's probably:
The Moors murders:
The wests:
Dunblaine.
Dunblaine is the most recent and that was 18 years ago.
20 years ago the world was just as messed up as it is now, if not even more so.
It's too late for me to go looking up crime rate figures, but I will in the morning and I won't be supprised if things are actually safer now.