They weren't born that way either. I guarantee you there has been some massive childhood/adolescence trauma in this person's life. If this person is a woman, then it's veeeery easy to understand why she feels this way.
Mental illness often results in irrational behaviour, which then often leads to wrong or inaccurate conclusions by the people around a patient, so professional help is very important.
That is exactly why this "hijack" is so bad, professional psychotherapists who have studied their field are rare but needed to properly diagnose patients like this. Hackers (and self-proclaimed diagnosers) only make their profession even harder.