The Romanovs' Falconer

Why can't F dor, the Falconer, marry Jelena? What does Rasputin do after taking a fancy to Jelena? Why does F dor fear Jelena's kidnapping? What could you do if you came across Rasputin's murder in progress? How does F dor defend the Tsar Nikolaj during the First World War and the Russian Revolution, and say Rasputin is bad for the Emperor? Would the History have been less terrifying without Rasputin?