I think that she might actually be the supreme sorceress reincarnated. It would explain why she has so many memories. Kuinshi
well i heard... . . . . . . . . . . . . . . . that Cecile was the daughter of the most(?) powerful sorceress and that's why magic like that doesn't work on her. And the story, to me, kinda hinted towards that as well.
Isn't there a spoiler like......
That bitch's sorcery doesn't work on cecil because she's like some super duper high level sorcerer???? Or i'm wrong? I'm sorry if i'm wrong.ㅠ_ㅠ