Resentments will eat you alive if you let them. The antidote to resentments is forgiveness.
To me, forgiveness does not make light of what happened, nor does it open me to having it done again. What forgiveness means, to me, is that I let go of the pain attached to the deed and move forward with my life.
That sets me free and the person who wronged me no longer has any power over me through my own resentments. So it sets them free too, even if they don't know it.
Hugs