And welcome to MS. I'm fairly new too, but I hope you find, as I have, there are many resources here to help on the road to recovery. One thing for sure, you are not alone on this journey. Disclose as much or as little as you are comfortable with writing, no one here is interested in condemning or judging, and most of all, you are not alone.
I think you've made a great decision to forgive your abusers, and I hope in the forgiveness department you have also forgiven yourself. I'm considerably older than you, so I know 56 is not too late to begin the process. Another great decision is joining MS.
Take care- we can all use more peace, love and harmony.
Whether you say, "i can't do this," or say, "I CAN DO THIS" You're Right.