This is really stupid.
Let's ignore that this psycho is alive without any issues, but what is the deal with that graduate girl? Since when graduates get to have secret bases, underground doctors great intelligence networks and knowledge of monsters. Yet still do anything in person.
It would be better to kill of that psycho, and have some police think that spider is responsible for some of those murders or something (her being alive just makes this manga some average edgy manga which is edgy just for the sake of being edgy)