Anriu's logic:

While your points are true you have something into consideration. Her kage, while appearing to be feral and dim witted, most likely has a strong understanding of electrical forces and how they work as magnets. It is very possible to say that the current itself, while created by Hayami, could be controlled by the kage itself. If this were the case her 'becoming a magnet' would not be to unbelievable. All she would need was a proper source of metal and she would stick.

 This is further backed by the kage's need to survive. The fact that he possibly took over is extremely logical and believable. I frankly see nothing wrong with the post.

(Either that or the randomly generated wave electrical wave lengths she created responded to near by metal, creating a natural magnet, which is also far from impossible)