I'm so sorry about his passing.....I know you tried to get him all the care he needed. Getting the necropsy to find out the real cause is another indication of how hard you tried. Did his stone issue give your vet any insight into what might be going on with your female? Not to say she has stones. But perhaps the root cause of his getting stones is applicable to her her health issues. Just wondering. Good job on getting her into a cage situation where she can't fall a great distance and break something. Once again, I'm so sorry about your boy....