How much were the Laubers offered to

[Octafish]

2. Murdoch working his magic.

The sisters said their brother probably wouldn't have told them if he had been attacked.

Remember, the editor decides not only what is news, but what parts of the "news" to leave in and what parts to leave out.

For instance: Mittler got to graduate from Cranbrook, even though he physically assaulted and battered a younger student.
The victim, however, never got that opportunity. Lauber was expelled from the elite school for smoking a cigarette.
Thus, the integrity of the illusion of class hypocrisy is maintained.

If that doesn't work, the pressure of being exposed for whatever is in the sisters' background makes for a handy silencer.