Here's the thing, though.
Jack had already made that call. He'd already taken and sacrificed the children of other parents. He'd already lied to make it "better," and it turned out horrifically. The father of one of the "missing" boys found out that his son was still alive and suffering.
To make that same call, from a narrative standpoint, would have been redundant. Jack had to make another horrific call. He *had* to sacrifice someone else. But he *didn't* have put it off on another family to bear. He chose to bear it himself.
Jack had already made that call. He'd already taken and sacrificed the children of other parents. He'd already lied to make it "better," and it turned out horrifically. The father of one of the "missing" boys found out that his son was still alive and suffering.
To make that same call, from a narrative standpoint, would have been redundant. Jack had to make another horrific call. He *had* to sacrifice someone else. But he *didn't* have put it off on another family to bear. He chose to bear it himself.