DD2 was sexually assaulted by someone who had previous as a child molester and was known to the police. He then turned his attentions to vulnerable young people, such as DD2's then boyfriend who was disabled, in order, I assume, to meet vulnerable young women. DD2 was in the wrong place at the wrong time (our house, believe it or not) and this person was acting as her boyfriend's carer (they knew nothing of his past because he lied about it). He was staying overnight with her, her BF and another friend, and took advantage of DD2 being badly affected by a combination of weed, alcohol and antidepressants. She couldn't escape from his attentions until one of the others noticed what he was doing and stopped it going any further. DD2 blamed herself, and wasn't going to report it until she discovered he had a record. She then decided that she had a duty to report it, to protect others, and endured 2 years of hell with interviews, investigations, postponment of the court case a couple of times and finally the court case itself. All that whilst suffering anxiety and depression and a painful health condition. We had to give evidence in court too (we were away from home when the attack took place but had to be character witnesses for our own daughter!) and it was one of the worst times of our lives. DD2's intimate and personal details were discussed for all to criticise and debase, and she collapsed twice in the witness box.
Eventually he was found guilty on one of the two counts, but the jury weren't unanimous. He got a custodial sentence, but that was immediately halved, so he didn't actually spend that long inside. I still wonder what on earth was in the minds of some of the jury when they didn't find him guilty on both counts, but we will never know.
I'm in no doubt that being in prison didn't do much apart from a) give DD2 a little justice - not much, but at least she didn't feel she'd gone through pursuing the case for nothing) and b) keep him off the streets for 18 months - but after that, who knows? You can't 'cure' sex offenders, of course-no one pretends you can, but how long can you keep them in prison to protect the public, and at what stage can it be decided they are no longer a danger? Not easy to answer either question.