I'm really sorry to hear what you're going through, @csh2020. There's not much I can say that other user's haven't already, but I wanted to highlight what I found to be the warning signs in your own post. Frankly, it raises more red flags to me than the whole Chinese Dynasty ever did.
I'm surprised no one mentioned it, but the biggest one for me was when you mentioned divorce and brought up court, and she immediately reacted by assuming you meant immigration court. Speaking for myself, but no one in their right mind would assume that right off the bat when speaking about a divorce. I would be asking why, what I could be doing better, how we could make things work. If I was faced with what you leveraged at her with my husband, I'd be absolutely devastated. Destroyed. The last thing I would be thinking about, were I in that situation, would be my ability to stay in the country.
If anything, divorce typically makes people want to be the farthest apart from each other.
Be careful with this woman. The devil is at work with her. Unfortunately, good souls such as yourself are targeted by these kinds of Green Card cons. Have faith you can overcome this, but absolutely seek an attorney. This woman clearly has no interest in anything but her residency status and doesn't deserve you.