I think I got an idea of what her name could be, but it isn't very good. How about Carrie for the good one, and ebony for the evil one. (And how about ebony often calling herself "scissor slayer ebony" or "homicide ebony"? *idfk. XD*)
Also, I know this is random, but earlier after commenting something on wattpad, after a few minutes, I thought of this weird scenario where idubbbz throws a glass bottle at the wall and breaks it and then screams "quack". XD