That is the decision of the court that led to this, that this is what she wanted. That is the, shall we say, proximate cause here, that the court determined that this is what she would have wanted. Obviously there is some disagreement on that score, but that's how we got here.
But if she had stated while standing on her feet "I now want to starve myself to death" she would have been whisked off to the looney bin. Somehow her disability makes that better!