Your situation has changed. She feels that. She is lost/confused. She is reaching out to you NOT for you. I believe sandis advice is spot on in regards to how you respond.
Maybe she is coming around. Maybe she is just temp checking.Maybe she is a lot of things.When she really wants back in it will be obvious.Until then you stick to your path.
Even if she is coming around it could still be a long time coming. You could drive yourself crazy analysing and wondering about her.
She is thinking about you. Otherwise she would notcontact. Taketthat as being a good sign BUT only a sign. Keep DBing and keep posting.
Best wishes
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together