The fact that she is talking about the future is a good sign. My wife doesn't mention any plans about our family beyond tomorrow. The fact that your wife wants to do things as a family is also a good sign. With my wife, she has no interest in doing anything as a family. No vacations, trips or activities together. These will provide you with an opportunity to show how you have made permanent changes to who you are.
Just as she has revisited her idea of leaving, she may revisit the idea of re-engaging into your relationship. I would take all of her recent actions as positive steps forward. Certainly much better than selling the house and splitting up the family at the end of the school year. In my case, wife is not leaving but I still need her to re-invest in the family and then hopefully re-invest in us as husband and wife. You have come along way in a short period of time compared to the minimal progress that I have made over the past 16 months. I did have an EA issue to deal with along the way that complicated matters, but I am hopeful that things will continue to improve over the next few months if I stick to my plan the same way you have.