Spiritual Seeker,
IMO, I think it's easy for us to say forgive, forget and move on, but in reality, it's a very difficult asset to acquire.
My best bet would to be to write it all out and discuss it privately with your family counselor and burn it and toss it.
Easy to say, hard to do.
Doing a fourth step with an Alanon member will help rid you of your resentments.
It's amazing how refreshed we feel after completing that step!