Please do not attempt to set a time limit on your wife's crisis. It could be shorter or longer than 3 years. You can't base what may or may not happen on what transpired w/her parents. You have a 50/50 chance of her waking up and wanting to reconcile. Why the 50/50? Well, it's because: 1) she may wake up and decide the damage and the work too great to return; 2) you may opt that you don't want to reconcile after all the time has passed; 3) you could reconcile and then you both discover that it's not going to work out because of the elephant in the room or she didn't completely heal and still has some of the MLC traits that will remain permanent; and 4) there is always the possibility after she settles down and back into her own skin, that the new marriage is far better than ever. That's why I always say 50/50. The future is not ours to predict at this time. You are now on her clock, which is very, very slow. You can't rush the process so dig deeper for patience and continue to have faith that will allow you to trust the system.
Stay the course, give her plenty of space and time to heal. Have faith in the process because it does work. Keep the focus on you for now.