YES - she is unhappy but what makes you think YOU are the cause of her unhappiness?
I definitely have played a role into her unhappiness, my stupid comment about her weight certainly didn't help and certainly proved her point that I'm insensitive. So yes it's partially my fault if not 3/4 my fault
Sorry - I must disagree, no matter what your mistakes were, they did not cause her unhappiness. That is all on her. Just like you are responsible for YOUR happiness so is she responsible for hers.