Again, I fully support you in your willingness to re-engage her and possibly get back together and possibly re-M.
That said, RIGHT NOW... it is only going to happen if she chooses to. And THEN... you will need to make the decision that you want to, at THAT time... not now, because anything can happen between now and then.
So in regards to DBing, your best bet is (of course) to GAL and work on any 180s that either she had complaints about that were valid, or that you've pin pointed in your life that you don't like and would like to change, as well as any other areas in your life that you want to improve upon.
Become an even more awesome man that only a fool would leave. She's left, for now... but it is documented many times, that people who D can and do sometimes get back together. She'd be more apt to do so, when she finally looks at how much better you are now, since she's left.