When providing food is a crime

In one of the most revolting stories I've heard in awhile, a morbidly obese woman accidentally killed her 2 year-old nephew, possibly by falling on him.

This woman's weight is estimated at an incredible 800lbs (363kg). Why such a small child was left in the care of a bedridden woman who couldn't even take care of herself is beyond me. Criminal charges may be filed in the death.

But there are some other criminal charges that should be filed, along the lines of attempted murder or accessory to suicide. A person who weighs 800lbs has no capability to go shopping or gather food for herself in any way. Somebody has been providing it to her - in massive quantities. There is a point where "no" is the more compassionate answer, especially when a mentally ill person is slowly killing themselves by gorging on food. What was that person thinking? If someone were openly suicidal, would they also provide them with razor blades or a gun?