If you’re telling the truth as you know it, and you’re helping somebody who got hurt, and if the people who did the hurting are trying to force you to be quiet, then you know you are doing the right thing.
I think you’re very wise to publicly document everything that’s happening. Keep doing that. Every time you get another piece of communication from the church, write about it. Every time they threaten you, tell the world exactly what they’ve said.
Hang in there. I hope things are going reasonably well for you, as well as they can be given everything.
Jim