MIL wants husband to talk it out with his father .... Again

I know my husband's relationship with his parents is his and it's not fore to dictate but I don't want his father in our lives. Especially since we are in the process of adopting a child. My FIL SA'd my husband through our his entire life. His mom continues to stand by him. In their religion the wife is supposed to stand by her husband no matter what so she will always stand by him no matter what he does. No matter how much he hurts their child. My husband stopped talking to his parents when he left for college. We met in college and got married young at 19. His mom came around in January of 2023 begging my husband to talk to his father. That his father was receiving therapy through the church and realized his wrong doings. My husband decided to hear his father out and his father apologized. They had a distant relationship but he still tried to make effort to have something and I supported it because I'm sure it was hard to have no relationship with his parents. Back in March my husband turned 24 and went to go see his parents. His mom left for Bible study and he and his dad were there to talk. He came home with the left side of his face bruised and tried blood on his face. I thought he had gotten into a fight with his dad and they beat each other up. He didn't tell me for a week that his dad SA'd him again. His face was bruised because his dad slammed his face into a mirror and he was forced to watch his dad do that. I told him he needs to call the police but he never had reported anything. He was too embarrassed. Traumatized, plus we are in the process of adopting and he doesn't want an open court case to effect that. His mom reached out to him again yesterday.... Over a month after everything happened saying she knows what happened and his dad is sorry again and he just slipped up. She said everyone makes mistakes, everyone sins and he was doing so well for a year and to please hear him out again. My husband ignored her and then she started saying manipulative stuff like she does have a whole lot of time left and she wants her family together. I just want to snatch his phone and block them. I want him to forget them. We are trying to build our family. I'm his family. But I don't want to put all this pressure on him. I encouraged him to talk about it in therapy because he still hasn't told his therapist what happened. He just walked around like a zombie for two weeks and I think he's trying to forget it. I don't think his dad needs anymore chances and I will not allow him anywhere around my family.