I disagree Koala.
She explained in detail, for our benefit, I suspect.
When she prepared the dc, it would have been done gradually, over time.
I, as a diabetic, have had to prepare dc, similarly, for phoning ambulance, Daddy, going to our one neighbour who he knows and trusts (and who babysits for us) in the unfortunate event of me having a bad hypo.
But children in neighbouring countries, Finland and Sweden, walk to school alone, and are left alone safely, at a younger age, than the UK.
And we seem to be moving more to their style of independence. Especially when it has be stated that the UK children are the most unhappy and anxious in the whole of Europe. Which is very sad. 