it is nice that you have thrown the spotlight on an important duty that all human beings must carry out.
in the hindu philosophy, on an appointed day during the year we pray for our ancestors right up to our great grandparents. there are certain rites and rituals that are done using mantras to ensure that they feel the positive effects of what we do.
in other words, we are creating a ripple that will extend outwards touching the past and with the future as the center. healing is a continuous process like you have mentioned.
In fact the spanish have a very interesting ritual that welcomes ancestors to come and visit them as part of the healing process.
I love how you always come by and share about Hindu philosophy. I really appreciate it because I'm really intrigued by the religion, culture, and philosophy. Thanks!