Six Weeks (1982)

A wealthy cosmetics tycoon and her 12-year-old daughter, who's dying of leukemia, strike up a sentimental friendship with a California politician. Since the girl has only six weeks or fewer to live, the trio fly to New York City where the daughter skates at the Rockefeller Center ice rink, assumes the lead in "The Nutcracker" ballet, and sees most of the sights of the city.