A judge is required to appoint a guardian ad litem for any ward whose guardian's interests might conflict with the ward's. A guardian ad litem was appointed for Terri, but Judge Greer allowed Felos to fire him when the guardian ad litem had the audacity to suggest that Felos' actions were contrary to Terri's interests. Since then, Judge Greer has refused to allow a guardian ad litem to represent Terri.
Other posts have noted that Felos has not properly filed required financial disclosures regarding Terri's trust fund. A guardian ad litem would have standing to demand that such disclosures be filed, and to look at them. The judge would also have such standing to make such a demand or examination on his own. Nobody else has standing to make such filings if the judge refuses to do so. I suppose it's conceivable that Felos' failure to file the reports was simply an innocent mistake, but I personally don't believe that. I believe that Felos and Schiavo's desire for unsupervised access to the 'cookie jar' was for the purpose of raiding it. If that is so, that would imply conspiracy to commit embezzlement on their parts. Further, since Judge Greer refused to appoint a guardian ad litem, he was legally required to monitor Terri's trust. His failure to do so, and refusal to allow anyone else to do so, strongly suggests conspiracy.
If Judge Greer was aware of any mismanagement in Terri's trust fund, he would also have been aware that in the event that any new guardian or guardian ad litem were ever appointed, such discrepancies would come out and his malfeasance in the matter would be discovered. Since the only Terri could be forever prevented from getting a new guardian or guardian ad litem would be her death, that would suggest a criminal motive for wanting Terri dead.
I don't know what the laws are with regard to a judge's immunity for legal consequences from his decisions, but I'm pretty certain that they don't hold in cases where a judge has a conflict of interest as large as this one. Judge Greer did attempt to by his actions have Terri Schiavo killed. If there's any funny business in Terri's trust fund, that would imply criminal motive. Attempting to kill someone with criminal motive is virtually the definition of attempted murder.