Complex sentence: In her early twenties at her arrival in Russia in 1910, as the daughter of the British Ambassador at the court of Tsar Nicholas II of Russia, she had a prominent position that allow her to meet many important figures at the Imperial Court.
Split into simpler sentences: In her early twenties at her arrival in Russia in 1910, she had a prominent position as the daughter of the British Ambassador at the court of Tsar Nicholas II of Russia. This allowed her to meet many important figures at the Imperial Court.