Well of course she was crazy. Crazy with hatred for her husband. That doesn't excuse the act, though.
Using your logic, I can do whatever I want and claim I 'wasn't right in head' or any number of excuses.
You seem very naive.
Hardly. I didn't say she wasn't guilty or had the right to kill. I just said it's more likely the reason she killed her husband is because she's nuts, not her CoC upbringing as you assert.
And using your logic, she can do whatever she wants because she can blame the CoC. Doesn't work that way, does it?