As much as I hate and despise the Society and its money-grubbing ways, I have to agree with the Court's reasoning.
It's just a pity that this undoubtedly kind and generous old couple was so enamored of the Society. I hope they provided for their other heirs as well and didn't give everything to the Borg.
I completely understand and sympathize with the family's feelings in this matter and don't blame them a bit for trying to get the "Conditional Donation" returned to the estate. I just don't think they had the legal grounds to prevail. Too bad. If the Society wasn't so greedy, they would consider the family's feelings and return the money voluntarily. But of course, that might set a precedent and they can't allow that.