It is not inheritance until they, ...well, inherit it (i.e. you are dead).
until then it is your assets, and if you want to keep them and have taxpayers cover your bills then you are missing the whole point here.
Personally, I think the story is bunk. Why do people try to protect their assets, when you acquire assets for just this type of thing. As sad as your situation is, why should any government agency pay for the care of your wife?