Seems you have done homework well enough to gain a lot of facts. More than you can sort and absorb. Tis the nature of the beast.
On a couple of those points. Your bet is that the A will implode for several reasons standing the test of time. It was born of confusion and depression on her part. This does pass and will impact the A. You wearing a happy face will impact it. The OM sounds needy. The more the better. She does not need someone to be too dependent on her now. The OM will seem that way more, as you beg less. You will become the friend, the rock she can turn to when she is ready.
You are living for her return, not yourself. Become the rock. I believe you once were, and she was drawn to that. You may have to see her drift far away from her rock, before she decides to return. You may even slip out of her sight before she senses the loss.
