Bottom line you showed your kids that you stood up and fought for your marriage. You may not be successful with your wife because I think something is broken in her. Your role as a father is to show your girls and son an example of what good husband and father is!!! Hopefully your girls will see you as a template for their future husbands and for your son a template of how to be a good husband/father. Once you have children the "ME" part of your nature has to be set aside and the "US" part has to be your focus. Your wife just couldn't let go of the "ME" of her nature.