LR, I don't know if it's wise to go straight to piecing...
While the two of you have had the positive contact, this sounds like the first time she actually suggested she is not running any further away... but I don't think I am convinced she is saying she wants to work on things, either...
unless she actually tells you she wants to try to work things out, and continues to show she's moving towards you... that would be the time to look at piecing, imho...
otherwise, like MHL said, steel yourself for the f2f, because it could bring up emotions you didn't even realize you were hiding...
