I was just reading an article about the fact that the WAS will "touch down and take off" several times. It illustrates that they are torn. When they "touch down" they are trying on being nice and reconnecting with you, and then they "take off" to regain their space.
For you, know this is a normal part of the process. If you pursue them when they take off, you sabotage yourself. Be there when they touch down, be fun to be with. Do NOT escalate. If she hugs you, don't kiss her. If she kisses you, don't say ILY. You need to follow the affection, but not lead it or inititate it.
Same with contact. If she reaches out, you can engage. If she doesn't, you don't either. Having her wonder what you're up to and watching you on social media is the best thing you have going for you right now. Make it fun to watch. "Check in" from interesting places. Don't give a full accounting of why you were there or who you were with. Make it slightly mysterious.
As others have pointed out, the more independent you appear, and the more she realizes that you are not just "sitting on the shelf waiting for her to return" the better your prospects. People like to pursue, and pursuing without risk of losing isn't that fun. The reason dating can be so exhilarating is that you're not in control and the other person can "opt out" at any time. The fun is in seeing them come back when they don't have to.
If she sees you getting out and living your life you will be best served.
Accuray
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