Forgiveness is more about the forgiver than the forgiven. The forgiver moves through the anger and loss and chooses to replace it with a new hope. Yes, sadness will linger, but it is acceptance of what is, and compassion, that bring peace ... and health.
Forgiveness is for YOU. It's your liberation from the relentless re-experiencing of a hurt. It releases you from the gnawing feeling of ick you feel inside each time you hear the person's name or see their face.