Movie name help please?

It was based on a true story about this American woman who was married to this man from Iran. The husband told his wife that he wanted to visit his family in Iran for a vacation. When they got there the husband told the wife that they were going to life there and since she was married to him that automatically made her a citizen and there was nothing she could do. He started beating her and they ended up living there for some years. Finally she ended up walking to the U.S. embassy that was far away. Anybody remember what it was called? It was from the early 90s I think.