The delay between those movements could make it difficult to shield damage from harming her body, and if another attack came toward a different location, then the black bandage Evil Spirit, would be unable to reach the next area that needed protection.
The second was the protective area that would be changed, causing the previously protected area to be left unguarded and vulnerable once more.
Even if she was protected once or more than that by the black bandage Evil Spirit, it had to move back to its original position that she was used to having it so that she could use it to reduce the damage taken as she used her arm to block and parry attacks.
The third was that bigger and faster movements to get there would be more attention-drawing.
All it took was for it to make bigger movements as it tried to get to one part of her body faster to protect it, for her clothes over her body to start to show movements, almost like something was moving underneath her clothing.
