@Namae They didn't reveal the letter to the public (even if Ari's name is crossed out) because that would lead to an investigation, and they said Larissa would spill the beans and name names (meaning Ari's & Alphonso's) if she was interogated. So the only person they showed the letter to is Larissa's dad, who would want to do what he could to bury the scandal lest people find out his daughter is the cause for everything, including what lead to the duke's death. So he obviouly wants to cancel everything and call Larissa home to Gallico.