@Tis_Bearself already addressed this upthread. Priests are indeed bound to do penance on behalf of their penitents.Dunno. Makes sense if sins have been absolved, as it is with standard confession. Perhaps one of the clergy can respond…
It’s beyond “reasonable” and “charitable”, the Church is actually immensely generous with grace. The Apostolic Pardon is a prime example of this.This shows how reasonable and charitable our Church is, and God’s love through it.