Time indeed, and much more time than you would like. If you're able to stick to DB and keep from pursuing her it will normally take six to eighteen months before she will start to re-think things, despite the questioning that you may think she's doing now. Focus on that as your timeline and don't really expect to see anything change before that. In the short term it's just a roller coaster of ups and downs that don't really mean much over the long haul.

If you want other situations on this site, most people are not able to control themselves or can't convince themselves not to pursue, so each time they go "non-DB" they essentially reset the clock and add more time to it. That's why if you "half DB" you can be in limbo forever. Stick to your guns and keep focusing on living a good life for you -- it's your best bet by far.

Married 18, Together 20, Now Divorced
M: 48, W: 50, D: 18, S: 16, D: 12
Bomb Dropped (EA, D): 7/13/11
Start Reconcile: 8/15/11
Bomb Dropped (EA, D): 5/1/2014 (Divorced)
In a New Relationship: 3/2015