Exactly. The reason that every single court that has reviewed this case has sided with Greer is because there is no evidence that Greer has abused his interpretation of the law. For the second time in a few posts, here it is again:
10) "Life-prolonging procedure" means any medical procedure, treatment, or intervention, including artificially provided sustenance and hydration, which sustains, restores, or supplants a spontaneous vital function. The term does not include the administration of medication or performance of medical procedure, when such medication or procedure is deemed necessary to provide comfort care or to alleviate pain.
This is from 765.101 Florida Statutes. Deport has a link above.
Greer did not have to make the ruling he did.
Where did he get the authority to rule against her being given anything by mouth?