Kathryn

Appearance
Kathryn appears to be a very frail young girl. Her outfit largely consists of a short dress with ruffles at the edges and a feathery cape. Accessories in the shape of flowers are pinned to her left shoulder. She has matching lace bracelets and anklets, as well as a necklace of the same kind. Her dark hair is left down in a relatively short style except for the two large loops of hair at the sides of her head. A flower crown is also placed on her head.

History
There isn't much description mentioned in the book that is centered around Kathryn but its is known that she is the one who sent Blackbird to kill Veloce, with the unconfirmed logic that if Veloce (Carciphona) were to die, the Carciphona curse would cease to exist. She also seems to have a long history with Blackbird as she is protective of her (this especially shows when Kathryn cares for Blackbird when she's injured) but however, this history has never been mentioned. Furthermore, Blackbird at the beginning of the Carciphona series, speaks of Kathryn as a "boss", who she is supposed to protect, as was backed up with the following quote mentioned by Kathryn: "You promised you'll always protect me."

Blackbird
Kathryn is officially Blackbird's employer, although they seem to be much closer than a standard boss/employee relationship. Blackbird once promised to protect Kathryn, who relies on her very much. It's also said that Kathryn is always worried that Blackbird would get hurt on her missions and is very considerate when the assassination attempts fail, almost to the point of being naive. When Veloce shows up in her room using Blackbird's bracelet, which is still in her hand, Kathryn interprets it as Veloce having killed Blackbird and coming to slay her as well. Assuming this, she flies into a rage, speaking in a different voice, saying, "What have you done to my Blackbird?" while pressing Veloce against the wall; showing that she is very protective of the assassin.

Veloce Visrin
Kathryn is absolutely terrified of Veloce and is the one who sent Blackbird to kill her.

Quotes
(To Blackbird) "You promised me you'll always protect me."