The sicilian girl

The beginning of the movie in 1985 in Balata, Sicily an 11 year old girl named Rita Mancuso saw her father killed in cold blood by a rival mafia family. So six years later her brother is killed by the same mafia she decides to avenge her brother and father by going to an anti-mafia prosecutor in Palermo with her diary used as evidence. So she was forced to flee her village and put into witness protection and was transferred to a safe house in Rome. She already knew that the mafia won't give up until she is dead and that's when she took her own life by falling off a building of a motel and then at the end of the movie they showed actual videos of Rita's life.