I am so sorry for the pain you are going through. It just breaks my heart for you.
I agree with you, I don't think you are grasping at straws. I have read a lot of posts on here where people are divorce busting their way right through the divorce process. You have made it clear to her that you still want to work things out and given her something to think about.
I know you mentioned going to church, and maybe at this point it is just time to give it over to God. You can't make her want to be married and I know you are hurting, but you can show her that you are a good person and be her friend and see what happens.
I hope you will keep us posted. I will pray for you and your W that she see's what she will be missing.