The phrase "to repair the harm" means fixing or making things right after damage or negative impact has been done. It involves taking actions to restore or heal the damage caused to someone or something. Full definition
When using restorative measures, an attempt is made to repair the harm caused by one person to another and to the community so that everyone is moved toward healing. (kippaustin.org)
The emphasis in restorative practices is on active involvement in repairing the harm done, rather than on passive acceptance of punishment. (educationworld.com)
When violence has occurred, the safety of the children must be insured; a violent parent can help repair the harm by setting a good example of anger control. (childrenanddivorceguide.com)