If I'm reading your sitch correctly, you just separated in the last few days? If so, you've got a long, long road ahead. The positive signs you're seeing right now are just a manifestation of your W's confusion about what she's doing. It is very unlikely that she has changed her mind or that a turnaround is imminent. I'm sorry to say that, but I've seen this happen so many times where a separation happens and then the WAS starts to pursue a little bit making the LBS think that things are on the mend. But the issues she has run deep and it's going to take her many long months or even years to sort her feelings on them. You've got to drop all expectations and just take things day-by-day. Don't try to figure her out or figure out why she's doing what she's doing, you can't. Just work on the one and only thing you control- YOU. Get out. Get a life. Make yourself the spouse only a fool would leave. And give her tons of time and space. Have you read DR?
