So, she said that she doesn't want to talk to me about anything personal anymore. Just call her about our son or if I have a question. She's trying to take control of the sitch by being cold, distant and treating me like a stranger.
Good. Now go dark and adhere to that: only talk to eachother about your son and legal stuff.
It's all really simple.
You already know what she is capable of. Get a L stat.