OMW - sounds like a good plan. Get some objective professional help. It seems like she is really struggling and sort of dragging you down too. Stay as positive as you can - maybe look forward and make some fun plans for memorial day and July 4th? Great times for summer get togethers and long weekend getaways.
Remember, she is watching for you to slip into old patterns/negative behaviors so she can justify leaving.
Faith is, at one and the same time, absolutely necessary and altogether impossible. --Stanislaw Lem