Having thought a little more, and just in case the part you need help with is specifically about the rape aspect, it would depend on how you view criminals, what is to be done with them and how they can make up for past transgressions.
For instance, is it about rehabilitating
them (i.e. make him realise what he did was wrong)? Or reparations (i.e. do a good deed to make up for a past bad deed)? Harm reduction (i.e. reducing the damage he has inflicted)? Straight up retribution (i.e. something bad happens to him equal to his past bad deed)? Or is it that nothing can ever make up for what he's done?
Then, there is the issue of the recipient. Who should be the one to deal out the punishment and/or be the recipient of his acts of redemption? Does it specifically have to be the person he wronged? Or will anyone suffice, like some sort of cosmic scales of justice?
I think the issue here is complex enough that you could (maybe even should) explore, discuss and elaborate on it in the story. For instance, you could have the team leader defer the decision of whether to take the villain in to the person he raped. Which might sound fair. Except, it essentially forces her to forgive her rapist for the sake of her friends' survival. Which is a really unfair position to be put in if you look at it that way.
Ultimately, with rape being a touchier than most as more of the audience would have an analogous experience to it versus say something like genocide, they will likely have an opinion on it - and it will probably differ from yours and from one another. As such, you shouldn't try to appease all parties and should instead pursue what works best for your story - or at the very least what you think is right.
Hoped this helped. That said, I'm no authority on the issue. Anyone else care to pitch in?
edited 9th Feb '13 3:10:50 AM by peasant