Dior,
I would have been at least as worried and probably just as angry as you.
If a stranger got involved and noone noticed this stranger talking to your son, then if that person hadnt have been a nice person trying to help, but some wierdo, that would have been plenty of time to snatch him. It does happen. Not often, but it is a risk.
If your son was scared and felt like he had been deserted this was also unacceptable. AS was not asking if it was ok to leave your son with her father. You had a right to say who looked after your child.
I would have been concerned, and very upset.
To be honest, for me this would be the end of the friendship, at least I would never want this person to look after my child again.
Children are vulnerable. There are no guarantees, but I certainly hope I do everything possible to secure their safety and would hope that whoever I left in charge would do the same.
We are all different in how we deal with our children. I prefer to be cautious, and try not to smother - but my daughter is only 3 and a half.
Take care Dion
saka