Those children were perceived as spawn of the devil. They came from unwed mothers ... remember??? It was taught that GOD didn't love illegitimate children.The forensic people have told us that the configuration of the remains and evidence of continual decapitation and dismemberment resemble the usual signs of ritualistic murder These children werent just cut up, they were massacred.
The people in charge probably thought they were doing the holy GOD a big favor by getting rid of the nasty little devils.
Did you expect the care-givers to LOVE them to death. Religion was based on the premise that evil didn't deserve kind treatment, as there was no hope for those that were EVIL.