Bluetoria I agree with you about Mary and Alix possibly not being too friendly. I think Mary was far more German than Alix. I heard and I don't know if it is true that when Queen Mary christened the Normandy her voice was broadcast on the radio and the British wanted to know who that German lady was and that she never spoke on the radio again.
I think, like the Kaiserina who was a good German Lutheran, Mary was put off by the Orthodox show of religion. I read somewhere that during a visit to Berlin, Alix was followed by Orthodox priests who were chanting, swinging incents and sprinkling water all over everything and the Kaiserina found this religious display very inappropriate and held a grudge against Alexandra for giving up her sensible, moderate Lutheran heritage. I am sure that Mary must have shared the same kind of feelings.
I think that Mary placed duty above all else as her way of of showing how much she respected her elevated position. And I don't think that she was delibrately heartless, I think that there just big pieces of her emotional developement missing. You know the famous story of her collection of fabrege and how she would invite Xenia to tea so the Czar's sister could identify Mary's newly acquired Fabrege pieces.
I believe the story goes that at one of these teas Mary asked Xenia what this pink enamel box was and Xenia told her its purpose. "But," says Mary, "It appears to be too big for that purpose, so how do you know? Xenia replies, "Because it was given to me as a gift on my birthday." Mary approves the answere and puts it back in her glass case and Xenia returns to her "grace and favor" house at Frogmore.
The other thing that separates Alix and Mary is love, Nicky defied everyone in order to marry Alix, George obeyed everyone in order to marry Mary. The one was a love match and the other was union that was based on mutual respect that gradually grew into affection. And where one could not imagine Alix living without Nicky, Mary biographer, Pope-Hennessy said that Mary did not really blossom as an individual until after her husband died.
I feel that they do share some similarities, their frugal nature, their deep seated loyalty to the throne, their shyness, their conservatism, and their moral piety.