I think Crimson has given excellent advice as it's so difficult for all but saints to let go of anger etc just like that. It has to be acknowledged in some way & you have to do something with it, like writing it down or doing something positive with it. Otherwise it's so easy to be the one always turning the other cheek while others continue to hit you.
My sister has important family documents, like grandfather's last letter before he died in WW1. I only found out about it via a cousin and sis has made up 101 feeble excuses not to show it to me. I now have the choice between forgetting about it & denying my wish to see it or feeling nervous everytime I broach the subject. She still has th epower to send me into little sister mode. As ever in our relationship, it's a no win situation whatever I choose to do. It's not just about a bit of paper, it's what it represents. I wish big rows which clear the air had been part of our family style rather than avoidance & simmering resentment.
Static caravan purchase is it worth buying
NHS U turn on trans terminology