True power in the isekai support role is not about the YPS-3 designation, but about the direction of the character's movement. Because one operates via conceptual authority and the other through physical magical exertion, a direct combat comparison is meaningless. Instead, the divergence lies in how they navigate their proximity to the protagonist. Sylphiette represents an upward climb; her high Growth score reflects a conscious decision to shed the identity of a victim and forge a persona—Fitts—capable of standing beside Rudeus. Her journey is one of additive identity. Conversely, Beatrice represents a downward descent. Her struggle is not to acquire more, but to let go of the centuries of stagnant duty. While Sylphiette builds a wall of competence to protect her bonds, Beatrice must tear down the wall of her own haughtiness to survive. Her low Ego score is not a lack of will, but the result of a spiritual paralysis that only a contractor can break. Sylphiette’s narrative function is that of an anchor, providing stability through achieved parity. Beatrice functions as a mirror, reflecting the cost of immortality and the agony of waiting. One character fights to become a peer, while the other fights to stop being a monument. This distinction reveals that isekai treats female agency either as a pursuit of equality or a liberation from predestination.