Smile and they'll never know what you're thinking

Fran is smiling on this Aeroflot flight because
a) She has just fouund out that no one smelling like the bottom of the Volga River will be sitting next to her on this flight.
b) She just killed a terrorist roach and helped save the lives of 129 innocent Russian lives aboard the plane (see blog below).
c) Two Russian men seated in front of her gave her some of their Russian vodka they smuggled on board. No wait, that was Mikel.

Correct answer is d)

d) Fran is always smiling.