Thinking of a movie i can quite place.

1980s or 90s movie where a mother claims her child/ baby was kidnapped. Has media an police looking for said child. But she was the one who actually killed the baby an hid the body in the woods. She might have done it to more than one or her babies. The main character of the mother had long redish curly hair. An its not the Australian dingo movie. This is an American movie.