 Once there, she escaped and took refuge in the apartment above her brother-in-law's with family friend Princess Vyazemskaya.Uritsky had been murdered in late August, and the Bolsheviks were terrorising Petrograd in what was later called the Red Terror.Natalia's daughter, "Tata", was arrested and imprisoned, but released after a few days when it became apparent she had no knowledge of her mother's whereabouts.