I do not think that anyone is "impossible to find", if a person is alive, I am sure that they can find that person. Hell, even if she is not, they can just keep on following the leads and figure out what happened to her, with proof of DNA. Why? Because its 5+ million dollars we are talking about, and there are a lot of people who would love to get that and retire a wealthy person. I just think that people are not looking for her, because of lack of trust towards the government, I wouldn't search for her neither, because I honestly do not think that they will actually pay up. That is their trouble, and they need to fix that first.