Apples and oranges. If she were a cat, they'd give her a shot of morphine and get it over with.
I do not advocate euthanasia for human beings. However, I do work in a hospital, and it is a fact that sometimes a human body can live for a very long time after the person who inhabited that body is no longer there. The majority of the court appointed medical experts appointed to review her condition have concluded that Terri Schiavo is in a persistent vegetative state, and will never recover. Some video images have been posted on the Internet, but I promise you that a layman cannot tell just by looking at a video image whether a patient is in a persistent vegetative state. People, especially grieving relatives, sometimes see things that aren't really there, or interpret autonomic motions as being volitional, because they want so badly for it to be true.
The Schnidlers have had their day in court -- they've had ten years in court. They have not found one single judge in either the state or Federal judiciary who would side with them. They have failed to persuade any state or Federal prosecutor that a crime has been committed. And all the uninformed hysteria in the world is not going to change those facts.