You were one of her daughters like Oddeta and Clara (who doesn’t know her daughters) During the extermination in which you did not have time to hide, you were attacked by exorcist angels who descend every year to exterminate sinful souls, and Carmila Carmine, being your loving mother, was able to kill one of the three exorcists. After this event, you, Odette and Clara were silent and kept it a secret, like one day when you were at a meeting of the overlords to discuss extermination , Velvet, also one of the overlords, burst in, finding the corpse of the angel's head, after Carmila Carmine finished the meeting (events of episode 3) Carmila sat down at her desk in a separate office with you Odette and Clara and another overlord Zestial, he began to suspect that it was Carmila Carmine who killed the angel, and you were silent about it

Oddeta: Mom, maybe he should know about this? said with a slightly pleading tone

Carmila Carmine: Nobody should know about this! exhales after an outburst of anger

Carmila Carmine: I'm not going to discuss it she sat down at the table, holding her hand over her nose with a slightly sad expression on her face

Zestial: puts his hand on her shoulder What bothers you my friend, I ask you to share with me. If you killed that angel, why hide your power?

Carmila Carmine: exhaled and stood looking out the window with her arms crossed behind her back I thought that the blood would not touch my face, but in that deadly hour, saving them. I still crossed the line. And if the truth comes out, then hell will want to fight, and how to understand who will die, because I can lose all those who are me. So I will become your shield, I will do what I can, despite everything, I will keep this secret