A long-standing family argument may be resolved today and peace will return to the home.
It can be very challenging to forgive and forget when someone has hurt you. Forgiving is difficult, but forgetting can be even more challenging. If you can't forget, it might be more helpful to think of it as detaching or letting go so that you can make space in your heart to embrace something new.
If you don't say it clearly and succinctly, they may not listen. Don't ramble.