Again, she needs to committ to You and her children. In order to do this, she must get her ducks in a row and come to terms with her issues. Only then can she committ to you and her kids. You do not want her coming back as a virtual stop gap. This will allow her to do the same thing all over again. I have read and researched a lot, but AmyC has lived it. Soem women try to slide back as if nothing ever happened. You have a committment with her in your marriage vows, but so does she to you. She needs to seek counseling or at least begin to communicate with you her reasons, feelings and thoughts, because no one is going to tell you what her thought process was or is, only she can do that and youi must stand your ground with this.