No, you don't have trouble asserting yourself; you are constantly cross-examing her. That comment you made about her not knowing she was divorced and was unhappy about is absurd.
I have NO idea what the current status of the relationship is, if any.
But I will say from what I was able to discern, if she is back in your life and you want her to stay, then quit accusing her and confronting her at every turn.
This is not remotely healthy or productive for any relationship. It would seem from her perspective, you do not handle the truth well, she is afraid to tell you anything. And you see her as secretive, which she may be.
This is a precarious dynamic and requires a number of changes and a great deal of work on both parts.
