Of course this applies to rape as well. On that subject I do think it is important for the law to recognise that it is possible that the body and mind of the victim will heal, and that their joy will heal as well. I think we have a duty to assert and support a victim's right to declare themselves whole again after the experience, if they come to feel that way. Perhaps not that it was inconsequential, but that it was not insurmountable. The law needs to recognise that a victim of abuse may conclude his or her life has entirely resumed its course.
In my mind, that represents the earliest possible moment where considering parole of a rapist would be ethically warranted. Based on that requirement, some imprisoned rapists may never even have the opportunity to apply for parole. However there is one more aspect I would write into the law: I profoundly feel that the memory of the event belongs to the victim alone, for their sole reference, to be recalled or recounted only in their absolute discretion, at the time and in the manner of their chosing. The abuser is not entitled to the memory of what occurred, the events, the reactions, the betrayal of privacy, or some stray detail which even the victim may struggle to recall. None of that belongs to the criminal. To have memories of all that lodged in the abuser's brain represents the continued possession of something stolen.
I would thus as a matter of standard practice have abusers undergo some procedure similar to a lobotomy. The memories would be removed, regardless of consequence to the convict, by whatever physical procedure is necessary for the criminal's mind to relinquish that which it is not entitled to know.
One might also argue that neither is the criminal entitled to be free of those memories; thus there might be a role for the victim to determine in the course of time that the criminal's memories should be left.
Ethically, I think that is all a rapist or other abuser is entitled to. I'd make the same caveats about being able to reverse a miscarriage of justice, so I might not get to implement all of that, but I think that is the baseline.