Well said father of 3...... the only thing i could add is dont lose yourself trying to fix this. If you love her with all your heart like i do my wife. You'll understand you can't fix it. You need to take care of yourself.
Like father of 3 said work on being the best husband you can be and the best person you can be for yourself. Be positive. It is hard to be positive all the time. Like the last few days ive had the internal battle fight of the negitivity. I try not to let my wife see that because it doesnt help her when she is already trying to deal with PTSD stuff day to day. Positive, strong, loving, and helpful. O and don't forget to ask God for help. Life is a journey and a lot of it is in his hands.