These attempts at justifying their actions are self-serving. The success rate for rehabilitation for incest abusers is higher than other types of child molesters or pedophiles. The recidivism rate for this type of crime is relatively low. Because most incest abusers do not have specific preference for children, they have a good chance at rehabilitation if they want it. Obviously, the first thing that must be done is to get the abuser to realize that they have caused the child pain.
Many offenders maintain and deny that they did anything wrong or caused the victim any harm.
Once their is the realization that they have caused pain to the child, then the offender must be taught to take responsibility for their actions. The sexual abuse of a family member is difficult to accept. When the abuser is also a part of the family, it threatens to tear the family apart. Loyalty is divided between the abuser and the victim. This kind of turmoil only adds to the victim's suffering.