An interesting idea I read elsewhere was that it would have benefitted society if Jeb Bush had called in the Florida Guard and ordered a Guard doctor to hook her back up. Sure, it would have sparked a constitutional crisis, but IMHO this sort of thing is the kind of problem that NEEDS to be forced. What happens next time?
It's been pointed out that doing to a dog what was done to Shiavo would result in jail time, so what exactly would the courts have tried to do to the governor if he'd ordered the state police, with Florida Guard/Militia protection, to hook her back up? What if the Governor had directed the state police to take custody of Shiavo for her own protection, making her a ward of the state? If a state child protection agency can take children from their home due to abuse, can't a government agency take an incompetent person into protective custody?
It's too bad the governor and president weren't willing to fight this battle, because it sets the precedent that the next of kin's wishes are in general to be held higher than the preservation of life, and that in a custody dispute where one party wishes the ward to live and the other wishes the ward to die, again the decision goes to the legal custodian, not in favor of the preservation of life. Setting the letter of the law, which we wrote without intending these consequences, above simple preservation of life, is an extremely dangerous precedent.