the opponents of liberalism was The absolute monarchy, the divine right of kings Prevalent in the Middle Ages
and Later on, the fiercest opponents were corrupt
The third Decree states that all legal business, documents, letters, and actions do not need a seal to be legal. The seal is the stamp of the ruler.
One assumes you are talking about the unfortunate Daisy Armstrong, daughter of Colonel Armstrong. If this is the case, there is no official explanation but the assumption is Ratchett/Cassetti (the murderer) killed Daisy because he could not be bothered to take care of the young girl. After all, he assumed he'd get the ransom money anyways.