Simplify the following text for a Grade 6 native English-speaking person.
Original: Her legal battle for recognition from 1938 to 1970 continued a lifelong controversy and was the longest running case ever heard by the German courts where it was officially filed .
Simplified: Her legal struggle to be recognized as Anastasia from 1938 to 1970 was a a controversy for her whole life . It was the longest running case ever heard by the German courts .