Ugh. I live in Arizona, where this happens each and every summer, repeatedly. (and pool drownings, likewise preventable)... I do not have children and made this choice long ago. But this story just tugs at me, maybe because there were two of them, maybe because they were together, maybe because it is all just so so very tragic... I never thought I'd consider it, but I would have taken those children. I know there are others who also would have upended their life for these girls (not to mention the myriad of others in similar sad, neglectful dynamics).
There is nothing we can do except share this story and do our part to help each other in life, to be good to each other, and to look in locked, hot cars if we think for even one second a person or animal is inside in distress.