Ito claims she is well trained, but she has a tough time remembering not to attack humans
Nafyla is obidient and cold. All she cares about is pleasing her master, Ito, and seeing pathitic humans die. Her beliefs are centered around a bitter hate for all humans, good evil or otherwise. She was made to kill, and that's exactly what she does.
Because she is a doll made simply to kill, Nafyla's entire body is a weapon. From her "claws" to her chest opening up to disperse time bombs, Nafyla's entire body is essintailly one killing maciene.
She was only made recently, so her story hasn't been written yet.