From what it seems, Carp put all her points into book smarts, and not a single one into adaptive learning, self preservation, or pattern recognition. A real textbook example of a know-it-all who has learned everything they know either through books and tutoring, or by some method which they do not like thinking about / remembering.
In other words, Carp is probably trying to distance herself from her old witch ways as much as she possibly can. And because of this, she is forcing herself to always reinforce the narrative of her current self as much and as often as she possibly can, even when under threat of the Queen's anger.
tl;dr Carp is probably deeply traumatized, ashamed and/or embarrassed by her witch past and is now actively trying to bury it under her current self by overstating to everyone how they should see/treat her as.