I believe it is an american TV movie from the late 80s or early 90s. A woman with amnesia is living with a man that loves her very much, until her (first) husband finds her and takes her back to her home and family. Their young daughter (8 or 9 years old) recents her for leaving her when she was younger.
The woman starts regaining her memory and realizes her husband is bad.
At some point, the daughter confronts her father and tells him she remembers when he left her mom in the middle of nowhere and drove away (the girl was in the back seat).
At the end of the movie, the woman keeps custody of her daughter and returns to her life with the man she loves.