The Archbishop of Necessarius and also the English Anglican Church. Despite being the Archbishop, she looks like an eighteen-year-old girl with long blonde hair that's 2.5 times her height; other than that, few details about her are known. She speaks funny Japanese, courtesy of Tsuchimikado Motoharu teaching her, though it was mentioned on a few occasions by Aleister and Stiyl as sounding "weird," with Stiyl going further telling her it was a mistake to think of Tsuchimikado, who goes after his own sister, as a "normal" Japanese person and learning Japanese from that source.

She loves baths and has a collection of the latest designs of baths from Academy City, courtesy of Aleister as a gift to sweeten relations between the two sides, in addition to other technology such as the latest design of washing machines given to the Necessarius female dormitories.

She might sound simple and irresponsible, but behind her smile lies a cold and calculating personality, with Stiyl mentioning she does things on both ends of the scale that it balances out to the point where it's impossible to tell whether she's good or evil as she is described as "no one is better than her in manipulating human feelings, rationality, interests, ethics, and necessary values" and "the hidden dragon among magicians, she's somehow able to get to the top, and it’s not done cheaply." An example of this is Laura being the one who designed the "John's Pen" mode of Index and lied to people that Index must get her memory erased every year, as a attempt to maintain control of the grimoire library Index holds. She does as many good things as she does evil things. On the balance of good and evil, she’s keeping an intricate balance.

Another example of Laura's viciousness is when Index is under the control of Fiamma, she plans to forcibly use the remaining controller to prevent Fiamma having access to the girmoire collection Index have, even if it would put even more intense burdens onto Index. Stiyl rejects this move and deliberately stays with Index to prevent Laura doing anything, and plans to kill Laura if it means saving Index. Laura then activated her controller blocking Fiamma's signal, forcing Index into John's Pen mode and tries to fight back. Laura then coerced Stiyl into fighting Index, saying she is giving him a chance to do something to solve the problem at hand, and she'll step in with the controller regardless if he fails. All that was done with a seemingly sincere smile on Laura's face showing no outward malice.

Laura prefers to work behind the scenes if possible, and let others like Kanzaki or Stiyl deal with meeting with other factions face-to-face. She is also a close friend of Elizard, the two having known each other for years.