Well...there's something really creepy about that whole movie, if you ask me...
It's supposed to be creepy. That shot of her underwater, dead in the submerged car, is one of the single most beautiful shots in all of American film, up there with the final close-up of Chaplin's face in City Lights.
Night of the Hunter is a true American classic (Robert Mitchum, Lillian Gish, those kids! And directed by Charles Laughton, channeling D.W. Griffith). Plus, Winters was in Lolita, as well. These two films alone make up for all the crappy flicks and buffoonish talk show appearances.
R.I.P. Shelley Winters.