A woman who was attacked at knifepoint before being sexually violated said she could no longer work and had been diagnosed with post-traumatic stress disorder.
The woman spoke in the High Court in Auckland shortly before her attacker, Andre Charles Port, was jailed indefinitely.
Port, 41, was appearing for sentence having been found guilty of sexual violation, abduction, assault with intent to commit sexual violation, indecent assault, blackmail, attempting to pervert the course of justice and threatening to kill.
The charges related to two attacks on women in May 2008. Both happened while he was on parole and within three weeks of an easing of his supervision conditions.
Port was introduced to the woman, a mental health nurse, by a male work colleague and she was trying to help him with a programme to stop smoking when the offence occurred.
After persuading her to drive around Auckland, Port threatened her with a knife and forced her to drive him to a country area outside Auckland.
There he sexually violated her and indecently assaulted her before she managed to escape.
The woman said she had a successful and happy career until that point but the incident caused her massive trauma.
"What you did has ended my career. I was too traumatised," she said, saying she could no longer feel safe around any clients as a result of the attack.
She also said she has suffered from post-traumatic stress disorder and depression, suffered nightmares about the attack and took her anger out on occasions on her partner and her son.
The woman also said giving evidence in court last year was traumatic, as was being labelled a liar during the trial.
Port subsequently sent a letter to the male work colleague threatening to reveal some 30-year-old convictions of his if he was a witness, and also threatened to send "some of my boys" to kill the woman if she maintained her complaint.
The attack on the woman came two weeks after Port attempted to drag another woman into a sauna at the ASB Tennis Centre in downtown Auckland.
She managed to stop him and bit his finger, after which he punched her before fleeing.
Justice Hugh Williams said Port had 23 previous convictions, some of which were for sexual violence and other violent offences.
He said Port had a mild intellectual impairment and been in state care since he was two. He was removed from numerous foster homes while growing up.
He had spent most of his adult life in prison and while there had been the subject of several high-quality programmes designed specifically for his rehabilitation.
"None of these programmes have shown that they have brought about any substantial change in your behaviour," Justice Williams said.
Reports analysing him suggested Port had a sadistic sexual mindset and had a very high likelihood of reoffending, he said.
He said the only way the public could be protected was a sentence of preventive detention, which means he will be imprisoned indefinitely.
Port was given a minimum period of imprisonment of seven years but he can only be released after that point at the discretion of authorities.
