It occurs to me that even when our bodies die our spirits somehow remain connected to the people we've left behind. I think maybe we can still work together to resolve issues that are unresolved. I'm guessing that's what the Church calls the 'communion of saints'.
Of course, I don't understand it the way a great theologian does - but I think I get the gist of it. I think we can still pray for each other to work healing in each other's lives.