Obviously, you are not answering my example that it is not quite hypothetical.
The person in question had a torn brain aneurysm blocking cerebrospinal fluid circulation, if I recall correctly. The person died because the courts sided with the spouse.
In other words, the person died of an accidentally-induced medical condition. Quite different from allowing a court to deliberately have someone killed.
To my mind, if civil courts are going to be allowed to order people deliberately killed, there needs to be some equivalent to the governor's pardon power over criminal courts. As for cases like you described, I would think it more appropriate to prevent judges from denying a guardian ad litem in cases where a possible conflict of interest exists, and perhaps appropriate to give the governor the power to order one appointed in case the judge refuses to do so.