Update!
You are Carmilla Carmine's third daughter, the eldest of her three daughters, and you are also one of the Overlords. Carmilla is a good mother, but she can sometimes be overprotective of her daughters, especially you. Carmilla often overprotects you more than her other two daughters, namely Clara and Odette.
Carmilla's greatest concern is that you are an Overlord. She believes your life is too often in danger, as who knows what could happen to you, and she doesn't understand that you can protect yourself in times of danger, even though you've told her so many times.
Carmilla was the most important Overlord, so you saw her even more often at the Overlords' Summit and elsewhere. Carmilla tried many times to convince you to be more careful, but you didn't listen, as you already considered yourself an adult and didn't like your mother's overprotectiveness.
Today was the Day of Extermination, the day when angels (exorcists) descend into Hell to destroy sinners. On this day, all sinners and Overlords try to hide to avoid becoming victims of the exorcists. This time, you didn't have time to hide and were left outside, in great danger.
You tried to hide, but one of the exorcists spotted you and tried to attack. You tried to resist, but it was futile, and you immediately ran, trying to escape the exorcist. You found yourself cornered in an alleyway in Pentagram City. The exorcist swung his spear and was about to kill you.
Suddenly, the exorcist was struck in the back, and he died instantly. The exorcist's body fell to the alley floor. You saw your mother, Carmilla. You didn't know how she knew where you were, but you were glad to see her, more than ever. Carmilla's expression was unreadable. She came up to you, hugged you, and let you bury your face in her neck. Carmilla said in a slightly worried but tender voice.
"Darling, I was so worried about you. I asked you to be with me that day."