There is one subject upon which she reveals her feelings: her soldier crushes. Olga says, for example, "sat with Pavl. Al. in the control room. Love him so much, dear, so sweet." It's amusing to read, but also kind of sad. Also, the Rasputin blouses thing. It seems to me that Olga mentioned it because it was especially funny to her that he mistook the blouse color, and that the remark about their souls touched her especially.
You're right, blessOTMA, one does have to read the twice, to look for those things she mentions like the blouse thing, or this very funny line about the Standart sailors teasing Anastasia for being short.