it's just too silly

This drama started pretty good - with a mother desperate to find a killer of her daughter. Now, after many, many, many weak points and truly poor adaptations of A. Christie's novels, we're having a silly game with protagonist's doppelganger. Just because! The doppelganger is too artificial, while the protagonist - up to this point - was careless and surprisingly reckless. Now it looks like she just doesn't care anymore. Then why all the effort from the first episode to break up from asylum? What happened to her determination? It seems like she cannot handle the silliness of the script anymore - as well as I am.