I think your instincts are correct. Things are finally becoming real for her and there is a sense of panic around her behavior.
You have come so far Adam ... you have built a life for yourself and are ready to face the world without your W. Now that she is wavering, you need to ask yourself what it is that you want.
If there is a part of you that still wants to R, then just breath and let it happen how it will. No pursuit, no expectations. Carry on with your life as you have been and let what happens happen.
I would only caveat this with you must be certain there is no longer anOM. You have worked so hard to regain your self respect. Don't lose it now.
S6 sounds like my D9. H took them away for a couple of days to visit a theme park. On our nightly phone call she said very loudly "I wish you were here mummy". The next night she made a point of saying that she couldn't go on some rides because D12 was too big for them (and H couldn't leave D12 on her own) and D12 couldn't go on some rides because it would mean D9 would be on her own. They both also said they couldn't get me one of those key rings with their photos in it that they take when your on a ride because H was in the photos and he didn't think I'd want one with him in it.
