She calls herself a Maestro, but looking at her combat keywords, the title of Maestro has actually been stripped from her. However, whether she doesn't know this or simply refuses to accept it... Despite being stripped of the title, she publicly declares herself a Maestro. Because of this, Albina seems to genuinely believe Callisto is an active Maestro. Since there's no way for those outside to know the complex internal affairs of the Ring, if Albina and the person herself say she's a Maestro—and her skills are the real deal—it's only natural that Sword and others would mistake her for one. Sinclair mentions that she came to the Spider's Bud of her own volition to seek inspiration. She was in a slump and seemed to have a faint inkling that the Body Art school was becoming obsolete. As a parent and mentor: She doesn't deny Ryoshu's artistic views, which Ryoshu derived through her education even though they differ from her own. Instead, she accepts them, saying that if they reach fruition, that too is art. She is deeply adored by her student Albina, suggesting she is quite capable as a mentor and guide. In Chapter 9.5, it's mentioned that even after joining the Spider's Bud, Maestros from other schools visited for artistic critiques (discussions), and she provided counsel to Docents and Students. She was apparently truly excellent as a teacher, leader, and debater. Callisto expected Ryoshu to create her own artistic trend. Ryoshu later met Araya and arrived at her own unique art called "The Ultimate Art of Brevity," which advocates for the shortening of all things. In that sense, her education as a mentor partially bore fruit. ...However, she is still a member of the Ring. As a parent, her actions are utterly depraved. She forced a young Ryoshu to watch her art (human dismantling shows) against her will. She created a small knife using the flesh and bones of a pet dog (Saru) that was suffering due to the Zenon Turtle Spiral inflicted by Yoru. She named it the "Beast Bone Blade Saru" and presented it to a grieving Ryoshu with great excitement. Raising a pet in childhood to teach about life and death, or making accessories from remains, are things done throughout history and across cultures. However, she showed off her lack of ethics and twisted sense of taste to the absolute limit. It's no wonder Lian said she has no pity. While she understands that art with different ideologies exists, her words and actions show subtle contradictions. Regarding "creation," she hasn't grown an inch from the past, sticking to either filleting people alive or decorating them after killing them. She claims to view unbreakable solidarity until the moment of death as something sublime, yet she dismissed Alisa's sense of fellowship—the very thing that led her to sacrifice herself to save Hohenheim and the others—as ugly. When Hohenheim suggested she was outdated and proposed a different method, she accepted the idea but tried to continue the strangulation anyway. She claims, "I don't get angry, I just get bored," but when Hohenheim hits her with a Diffraction Hammer, exposing her brain (her source of shame), and taunts her by asking if she's curious about the lesson that invisible things are also important, she flies into a rage. By the way, the Body Art school supposedly has the objective of physically expressing spiritual (invisible) things, so this was the ultimate insult. She said she felt the same emotion when the sword she was making for Ryoshu was destroyed in a revenge attack, implying she was incredibly pissed off. She says she tried to tinker with her own brain in the past but gave up because her skills were insufficient. She loves Guest.