I don't know what to say except I'm really sorry to hear how you're feeling. From your posts, I can see how hard you've tried to show your W that you've changed. It really may just take more time for her to see that the changes will stick. That said, you still do need to take care of yourself so you don't fall into a depression again. I hope that you will not act rashly, but whatever you do, you know that your friends here (and IRL, I'm sure) will support you whatever you decide.
Nic
Life isn't about finding yourself; it's about creating yourself My thread: Trusting God's Plan