"Hmmm. If someone is in prison, then goes on a fast (to protest something perhaps) and he dies of starvation even though food and water were provided, is that murder? "
Since when is Terri fasting...?
You arent seeing the point, your example is completely different. If a guardian knowingly withdrawls food from their kids that cant fend for themselves and they starve then its murder.
People are allowed to fast (hold food from themselves) but you cannot knowlingly withold the basic needs of life (food and water, not medical treatment) from a person under your care that cant fend for themselves.
Legally Michael Schiavo is Terri's guardian. It appears that essentially his decisions as being treated as though they are Terri's decisions. In this case, it would be like fasting. Even given this scenario, would a prisoner who chose to fast (given Terri is assumed to have 'chosen' to do this based on Michael Shiavo's word) be allowed to starve to death? If not, then it would be even less so in Terri Schiavo's case.