Lifetime movie about a woman and her child that got hit by a train the child died and someone is trying to make this women go crazy by playing a recorder of the sound of the train an child.

I remember watching this movie (I read the book it was based off of too), don't remember if it was on Lifetime or not, but you're looking for this: Remember Me (TV Movie 1995) - IMDb (http://www.imdb.com/title/tt0114262/)

...Kelly Mcgillis stars as a happily married woman who has a car accident on a railway line, resulting in the death of her young child. Two years later, her husband has rented a grand old mansion from one of his old 'friends.' However, when Kelly arrives, she begins to get paranoid, not helped by the fact that a creepy old woman with Alzheimers, living next door to them, is insisting that they have a ghost...