'If' and 'should' are about the most futile words in the English language. 'I should have done this'; 'If only I hadn't done that', are words tantamount to torture. This poor mother probably experiences replays of this every day of her life. And, whatever mistakes she may have made, I don't believe she deserves superficial, armchair parenting judgements of the kind levelled at the McCanns.
She's human. We make mistakes. Nothing she does can bring her child back again. She can't turn back the clock and make those decisions differently. We only get one chance. Fortunately for us all, most parenting fuck-ups don't have fatal consequences.
The podcast from the tech experts who commented on this case was truly horrifying. IMO every parent should listen to it. Brianna's situation - not least the details of the kind of content her depraved killers were downloading via TOR - would have deterred me from giving my own child a smartphone had I not already been resolutely set against it.
The same message might also be getting through to other parents. Banning these things in school won't help all situations. People also have to take responsibility as parents. But at least a schoolwide ban will prevent smartphones from having detrimental impact on children's education. It's a start.
The rest's down to education - similarly to the S.O.P.H.I.E foundation started by the mother of Sophie Lancaster. We can absorb those warnings or not as we choose.
I have nothing but sympathy for Esther Ghey in her dreadful loss, and support her campaign to the hilt.