Let things go right now....you are doing great you really are.
I'm really proud of you for not taking the bait at this comment "Saying that her life is still in limbo and that if she had her way she would get a lawyer tomorrow and file."
Because the fact is...SHE IS IN CONTROL, if she really wanted to file...she would have already. There is nothing keeping her from doing that....but she hasn't yet. Why? Because she isn't sure herself that's what she wants to do. Someone who REALLY wants to move on with their life won't waste time finding an attorney and filing.
She's also given you insight that....you still have a chance and she's vacillating between her feelings for you and her pain "she thought that she had already made her decision." She "thought" she had already made her decision? See, she's vacillating....keep your current behavior up.
This comment was interesting to me too "people who are getting a divorce don't do that", well...like you said YOU don't want the divorce so why behave as though you are? Honestly, she's not acting like someone who really wants a divorce either....now is she?
Honestly, you are doing great!! No, you haven't screwed up, but it feels foreign to you doesn't it?