I'm Alone(1993)

Original title: Я сама

Bandits kill Sergei in front of his wife and son. The son of the murdered man loses the power of speech. Nadezhda, Sergei's wife, is also unable to bear the blow. The murder of her husband literally stands before her eyes day and night. The militia, as it seems to Nadezhda, acts slowly and ineffectively and she passes the sentence herself and decides to execute it...