Have you been to a lawyer to find out where you stand?
I suggest you start thinking about the next steps to protect yourself.
She is getting worse, and at some point her parents will have had enough and
try to draw you back in.
I think a legal separation might be the next step, if you are still unwilling to consider divorce.
This will go south pretty quickly, especially if she loses her job.
That will happen, you know. . .
Great job on not responding--