Hard questions vise, not sure what to say to all of them. I don't think following her would be a good at all. With the emotional state you're in it could snowball into something you would regret. You won't learn anything specific, there will always be doubt of what you think you seen. You're still focusing so much on her instead of what you could be doing for you.
In her mind she is single, the paperwork means nothing and it's very likely she is pursuing or with someone. At the very least shes living up the single lifestyle. I know because my ex did and said the same things. She only pushed to file for D once I confronted her on om2, who she's now engaged to before our D is even final. You know from past situations she craves that new relationship feeling. She told you she was done so you have to accept that for what it is right now.
As for the being in limbo, I get it, it [censored] [censored]. It will only get better when YOU DECIDE you are going to make changes for you and enjoy the life for what it is right now. There is so much potential growth in that suck also, don't misuse it. All that you should be doing you can be doing separate from her and her actions. Don't worry about women right now or needing to be with someone either, that's a big trap that will end up causing you more pain, there is time for that when your not so attached to W. Let go of W and find yourself. The rest will come out with time.
Accept what is, let go of what was, and have faith in what will be
