Q1: If she had left, would you have then felt remorse or regret?
A1: Probably.

Q2: Would you have felt anger toward her and blamed her for not staying by your side?
A2: Yes if I ever realized depression was a disease. But then I would have some thing to really be angry about. My depression more than not leaked out in anger. If I was not sad then I was angry. Not just anger but rage.

Q3: Would it have made your D deeper, or fueled something else?
A2: Yes and that is the goal of depression, to keep fueling it and getting deeper.

Q4: If she had left, do you think you would have pursued therapy and meds?
A4: Most likely no. It took a lot for me to understand that I had a problem/disease. My wife consistently gave me reinforcement that this was something I needed outside help. The reinforcement was in the form of quiet, non-forceful whispers in my ear.

Thanks for your kind words.