Continuity mistake: When Bond has his final confrontation with Whitaker, he empties his PPK at him in an attempt to take him down. In the process, he hits the gunshield on Whitaker's weapon five times and it remains clean. But when Whitaker rounds the corner a few seconds later, the impacts from the PPK bullets are suddenly visible on the shield's surface.
Continuity mistake: The wheel that is shot off of Bonds car during the frozen lake chase scene is back on the car seconds later as Bond is jumping over the Russian/Czech soldiers.
Continuity mistake: On the frozen lake, a cottage is blown to pieces, a wheel flies away, and many explosions take place, rising big clouds of black smoke. However, in the wide angle, the place is spotless.
Continuity mistake: In Gibraltar, when the jeep falls off the cliff the driver disappears.
Revealing mistake: When Bond drives on the frozen lake, there are mounts of snow to hide the explosives from the rockets fired at by the enemies.
Chosen answer: She could have been let go off screen once it was clear that Bond wasn't going to kill Pushkin, so they could formulate the plan in secret.
Captain Defenestrator