I think that you need to move slowly. It seems like your W does not know what she wants and is flipping back and forth. The last thing that you want to do it let her back in too easily and then have her leave again. I think you need to ask yourself what you need to see happen if she wants to come back. Does your W need to end all contact with OW? Do you want W to go to MC? I think that if your W just moves back in without both of your working on yourselves, you are going to wind up in this exact same situation next week/month/year. You seem to be doing much better. Just make sure that stay off her roller coaster.
