She is a national hero in her homeland, hailed for plucking her little sister from their family home as it was consumed by flames. Now, Nastya Ovchar, her body burned extensively during the rescue of her sister, lies in a room at Shriners Burns Hospital Boston, half a world away from her home in the Ukraine. If they made a movie about Nastya, they could well call it ''The President and the Little Girl," for it was the intervention of a national leader who had endured his own share of physical suffering that assured the 5-year- old could receive lifesaving...
