Rather than letting the whole truth be exposed to the world, it's better to just keep Matthew Grant's mouth shut forever.
And as the position of the only son in the family became more stable, the attitude of the Foster family parents towards Samuel Grant became increasingly lenient and indulgent.
The series of unfortunate events that Clara Bennett later encountered seemed to be trivial matters that could be overlooked by the Foster parents.
Even Sir Grant was willing to step down personally to cover up for his son's crimes, not hesitating to concoct absurd reasons, claiming that he was the one who got Daisy Stone pregnant, thus diverting attention and creating a false image between father-in-law and daughter-in-law.
Such behavior was simply unimaginable in the eyes of others.
As for Mrs. Grant, she was a thoroughly ruthless and unscrupulous woman aiding and abetting the evildoers.