I know you went through hell.
I agree what happened was not right.
I also know it devastated you into pieces.
However, forgiveness is not to condone the other person or their actions.
It also does not mean you have to get back to talking with them.
Your boundaries are important. And respected.
Forgiveness is the surgery you do to yourself, so that the cancer of their actions does not spread throughout your life.
Forgiveness is the easiest thing, because staying with hard feelings only makes your life harder.