I would file tomorrow. There should be no contact with her at all. I cannot believe that you even considered giving her a chance to move in for a week. She still thinks she can have you both, It is time for this to come to an end, and the trainwreck for her will be ugly. If she comes to her senses after she hits bottom, then and only then will it be your decision, she is still making them.
File tomorrow, turn cold on this woman that has totally wrecked you, and more importantly, abandoned YOUR child. She is hurting your child, Time to protect your family.
