Complex #7 - the green(-card) mile

[Complex]

So my status did not change at all. There are no options for me but moving on with my life and letting this M behind me.
There is absolutely no chance of reconciliation any time soon.
The tension also got a little more, especially after wife found out that my greencard process is supposedly going to take up to another 6 months. Plus the 6 months of waiting period of a D.

She demanded to split up bank accounts or at least that I am going to open up my own one and we start splitting finances. Also she started demanding me moving out again.
I am not unwilling to work with her since this situation also becomes hard for me and hinders me to truly start moving on.

The idea now is I will get legal advice to ensure the safety of my greencard. I will also start opening another bank account to start building some credit and to cater W to split up finances. I feel obligated to work with her on this. It is within my boundaries of what I am willing to take action on myself, but I don't want this to become the norm that she demands and I have to take the action.

I feel ok and somewhat in peace although it still hurts a bit. And the part I am most afraid of is the bitterness, I am really afraid I will be bitter about this for a while. What can I truly do to overcome this bitterness? It seems like a very hard task.