Let’s not forget another tragedy. Aron’s parents and family have just had their worst nightmare actualized. You don’t wake up one day and become a child killer. They must have been suffering with him for most of his 35 years.
They did everything right; Aron went to yeshiva, to camp, had a bar mitzvah celebration with his Rav in attendance, everyone danced at his chasuna, and nebech he is a very very sick person and probably always was. So why was he born with this deranged brain; ask the third partner. And beware, because there are more around.