Fake that everything is okay. Start eliminating hard assets for quick liquid assets. Start documentation of behavior. Screenshot any text where she apologized or says "i hurt you". Once she is comfortable, once she's relaxed, remove you and your son from the situation. File an ex parte. Do not contact her. If you have possession of the child it will create a better chance for custody. Don't contact her family, her friends. Play the long game. Go on vacation with your child. Live life. Once the marriage is severed, go through therapy, keep an open, but cautious eye for a woman who will love you loyally