I, too, was sort of bothered by Alix's apparent inability to smile. Then I started thinking about it. There could be many reasons for her sad look:
1. Because of the death of her mother, she really WAS sad.
2. Because when Prince Albert, her grandfather, died, her grandmother, Queen Victoria, never did wear anything but mourning clothing and mourned her husband's death the rest of her life. Perhaps Alix thought this was what one SHOULD do at a loved one's loss.
3. Perhaps because in those days, hardly ANYONE smiled in their photographs...has anyone else noticed that? That COULD be just because "everyone else" did it that way.
4. Finally...my own hunch: For some men, a sad, beautiful woman is a real attraction. The challenge is then to do all in one's manly power to make a sad lady smile. Not that she rejected him, but remember, she DID play hard-to-get about changing her religion, etc., and to someone like Nicky, who probably had girls falling all over themselves to get his attention, this represented the supreme challenge. And then, too, if you read their letters, they truly did love each other and weren't afraid to express it to each other in private.
Just a note about the religion thing: I was very surprised that Alix, raised as a Lutheran, could make THAT issue her biggest stumbling block to marrying Nicky. I say this because if it was so im portant to her, and then she DID change her religion for Nicky, she STILL should have known better than to fall for a rascal like Rasputin. I just keep telling myself it had to be her deep, deep concern over the health of Alexei that caused her to use such poor judgment at times.
Just some ideas.
Ming