who is the monster?

Was supposed to be studying Abnormal Psych,but came across Ted Bundy so went googled bout it,then end up spending whole night watching documentary of Aileen Wuornos. Who is she? If you'd watch this movie before, you knew half of her story already:

I haven't watch the movie,so I don't know how near it was to her real story. Her real story,probably she herself don't know what was real anymore,as at the near end of her life she seems to be in schizophrenic state or appear to be schizophrenic.
Her whole life was chaotic. She never know her parents. Her parents were her grandparents. Mother abandoned her and her brother since born,father was a child molester and rapist that suicide in prison. Only person that she loved betrayed her (Tyria Moore was nothing look like Christina Ricci I tell you). I believed she did suffered from Borderline Personality Disorder,probably comorbid with other personality disorder as well.
Sad case of being born into wrong family with vulnerable genetic that got messed up by the society.
Everyone seems to be at guilt in that case. Who is the monster actually? The killer? The victim? The society? The legal system? The betrayal lover?
Nature or nurture,both played a role.

A&E Biography-Aileen Wuornos-Part 1


Life and Death of a Serial Killer- part 1

Recommend to watch whole documentary if you're free,hehe~
She was known as first female serial killer in U.S. Also known as 'unique' serial killer because no torture was involved and victim seems to be picked randomly. Her first murder victim was an act of self-defense remained as a myth. Oh well,subsequent victims was intended to pay her for sex and got killed,well not to say they deserve it,but they would pretty much still alive if they were good men that loyal to their wives.