Breeding Young Children
Warning This Section Does Contain Spoilers
The Veridical Codex Umbra speaks of the Ritual of Cleromancy.
cleromancy - is a form of sortition, casting of lots, in which an outcome is determined by means that normally would be random, such as the rolling of dice, but are sometimes believed to reveal the will of God, or other supernatural entities.
The Raven uses this Ritual to decide who will be picked to be the Perfect Vessels. What is not clear is what is the result of the Perfect Vessel and what the Perfect Vessel's job is.
Abigail's son, Alexander, was chosen as a Perfect Vessel and she should have felt elated and proud, but instead she was anxious and ashamed of her feelings. Why would she feel that way? Are the children young, too young to be married and matched with each other? Are they being forced into marriages at an early age in order to further the Family? Or even worse, are they being forced into a relationship with The Raven as children? If this why Abigail was anxious and ashamed of her reaction to this wonderful honour?