For me foriveness has been more for me than the person who hurt me. I grew up with a bipolar,, passive/aggressive defiance disorder compulsive lying mom. I sound horrible, but this is her diagnosis from he last stay in psychiatric hospital of almost a year ago. She also has alheimers. I really feel sorry for her.
I sometimes wonder if she has ever truly been happy in her life. One example of here behavior while growning up was: I have one sister 13 yrs. younger than myself. One day I came home from school and my mother beat me because I got to go to school and she had to stay home with a 2 year old.
This was just one of many examples that as an adult I no longer try to make sense of. I just know that she had so many psychological problems that she could not control. Forty years ago people who came from upper middle class families (my dad was chief engineer of a steel mill) did not have these things. I am thankful my father never left her; no court would have given him custody of little girls and he had even admitted that he feared for our lives at times.
So I do feel for your own mental health you need to forgive, find peace for yourself, but never forget what happened and to not give that person or anyone else the opportunity to ever do it to you again.