Quote: if she would rather me be there then she could simply tell OG not to come.
One of the pitfalls I find myself getting into is that I tend to ASSume that the WAS has the same sane thought process that I do. They view and react to the situations in their world as viewed through a tangled, knotted, mass of confusion with only glimers of light showing. We see things so much clearer. Yes, telling OG not to come is such a clear, simple solution. C cannot see that though. She knows that is not how she wants the situation to play out, yet doesn't know how to change it. They still make choices that are very reactionary. Then struggle to correct them. We have the luxuary of being able to look at a broader, clearer picture.
Quote: Is she just using me?
I don't think so at all. Again, I think that would be just a way too complex thought process. One that they are incapable of having. Their thought processes revolve around the the very small view of the world that they can see with their blinders on. It would be difficult to have a plan of using when operating like that.
You are doing great letting her come to you. And given the above thoughts, it probably helps her see you and the situation with you clearer. When you initiate, it adds another string to the knot that she is working to get undone.