Dear Rick,
I can hear your frustration and fears about your marriage. When one partner shuts the other one out, it limits the ability of the relationship to heal and move forward. However, I would recommend at this point that you clearly communicate your love and desire to heal and continue your marriage in a way she can hear it. Ask her what she feels the real problems are and what she thinks it will take to accomplish this—time, therapy, behavioral changes, etc. Really listen to what she is sharing with you and then follow through with action.