let me be the first to welcome you to the piecing forum, I have been here a year now and althought this stretch is taking you on the road towards recovery it is still vey much a bumpy ride so you'll still need to buckle up.
Although you and your W are moving forward together I know you will feel the need to get everything out into the open, but that will be the very last thing she wants to do and there wil be a number of reasons behind it, shame, guilt, protecting your feelings, the list will go on, but she won't want to talk. If you press for answers she'll probably back off from you.
At the moment your W still has a foot in both camps, you as plan A and OM as plan B, so if you have it in you just ignore OM and focus on you and making Plan A such a solid plan that W in her own time will ditch plan B.
The big step is your W has decided to give your M a chance all you can do now is work with the positives you have and work with them slowly as not everything with get fixed in an instance.
