In response to Rasputin (Alan Rickman) I do say that yes Maria is a big part of the movie how ever there is a scene showing Rasputin walking and talking to Olga and Tatiana (although I have to say there is no likeness by either actress of Olga and Tatiana) in the grounds when it is snowing. In the dining room scene Alexandra says "Pass the potatos please Tatiana." Tatiana replies "Yes mum". You see close ups of Anastasia and at times Maria in this scene.
Also when they are introducing Alexei to high society The camera lingers on Olga and Tatiana for a while. Altough I was abit confused by who was who as Anastasia didn't seem to have a fringe at the time.
When the tricentary at the church is shown, The camera shows the four girls with Alexei and his nose is bleeding Maria takes him away.
And when Alexei reliease that they are going to die soon he tells OTMA "We are all going to die." The girls are in shock but you see Maria true to form crying hysterically about it.
The scene where they are being executed they are all fall on to each other. Maria is the last to fall to he ground. I know this as I watched it with my boyfriend last week