Easier to use an old photo then to use a current doctored photo. People might detect the doctoring.
Similar to doctoring up a birth certificate for one that never existed
I'm guessing she looks horrible. It would probably be disturbing to liberals to see just how frail and sick she is right now. And that's saying a lot, since she looked pretty frail before the lobectomy (auto correct tried to put lobotomy here, but that was done decades ago). So the press just won't take or publish pictures of her looking so poor.