You've got a lot of positives going on, but don't talk about the sitch or feel you need to keep the conversation going. Just sit with her. Give her the silences where you are with her. She may be trying to figure out how to approach you, and you go and disrupt her train of thought with your keeping the convo going. Allow what feel like painful silences to hang there. She may get more from just your presence than anything you say.
Respect her silences. Allow them to happen. If it takes a more selfish analogy, think of the advice in negotiations (like buying a car): he who talks first loses. Being there and waiting for her to fill the silence sends a powerful message. It says you are ready to listen and follow her lead. Allow that beautiful moment to bloom. Then listen, validate, and consider.
I'm not saying you screwed up. It sounds like you had some progress. Now, let it develop, and patiently wait for her to open up by not filling in those silences with chatter. You are there. Just be there.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15