I remember this tragedy happening very well,  I was aged 18. Never were kids in my area ..Melbourne inner suburban, allowed to go to the beach alone! Or roam the streets as is purported! especially at that age...they were only babies!  It wasn’t the day Australia lost its innocence as people who don’t know like to say!  As kids we were always warned of stranger danger and what to do if we were approached. We played around the home, in our street, walked to school in groups, Not allowed to go to a neighbouring house without checking with our parents first.  Never would we have been able to go to the beach, or anywhere else alone, at the ages of 9, 7 and 4!!!   Stranger danger WAS alive and well in that era, it was drummed into us. I think it was laziness and irresponsible parenting. She should have gone with the kids to keep them safe! What was she thinking?  I feel heartbroken that it happened and feel deeply for the parents, but those little kids, and who knows what horror they went thru. Not right! They should have been kept safe and still be here today.