There are two mutually exclusive kinds of sorrow over sin — sorry you did it, and sorry you got caught. “For the sorrow that is according to the will of God produces a repentance without regret, leading to salvation; but the sorrow of the world produces death.” (2 Corinthians 7:10). Which sorrow culpable Catholic priests and officials choose to exhibit, over the long run, will be the difference between salvation and death. And the emphasis here is “over the long run.” The offenses committed have been grievous, repeated, tolerated and even defended. They have caused deep, deep wounds and have been serious violations of trust. Any attempt at restoration will have to be even more serious, heart-felt, consistent and maybe even drastic.
John the Baptist warned the crowds to “bring forth fruit in keeping with repentance” (Matthew 3:8). In this case, I believe appropriate elements would include recompense to victims (I know, how can you fully? But you can at least try.), a full, public acknowledgment of the sins committed, a removal of perpetrators from ministry, and a demonstrated effort to screen out perpetrators.