I think it's difficult for many of us whose notion of "family" includes concepts such as unconditional love, support, and encouragement to understand the dynamics of the Russian imperial family.
I think you've cut right to the quick of it, LyliaM. We tend today to try to calibrate the conduct of the Romanovs to that of a conventional family. But the Romanovs were a
dynasty, which is something quite different . . . and they were generally mindful of it (even when they were flouting the implications).
Senior marriages in the dynasty were matters of state and could have far-reaching domestic and international consequences. In order to protect the interests of the dynasty as he perceived it, the tsar had power over the rest of the dynasty to confiscate, to arrest, to exile, to remove children from parents, to dole out or withhold largesse.
Given this power, the personal idiosyncracies of the monarchs loomed very large inside the family circle and could not help but become the focus of intrigue and maneuver.
Alexandra, from the outset of her reign, showed very little tolerance for the society in which the rest of the imperial family was reared and lived. She felt dress was immodest, morals were lax, time was frittered away unconstructively. And she affirmed her disapproval in very real and public ways, such as by keeping her daughters insulated from court and dynastic life.
Beyond this being viewed as an affront to the rest of them, the imperial family had to watch Alexandra pass harsh judgment on them while she herself failed in what they viewed as her own duties to the dynasty: loathe to make public appearances, and often noticeably withdrawn when she did; prone to follow mystics, even to the point of exposing the monarchy to public derision; an agent in removing the gregarious Nicholas from his circle of friends and extended family and caging him in a claustrophobic inner family circle where her real and imagined illnesses called the cadence of family life; a meddler in Russian political affairs which she understood little but on which she opined much; and, finally, the knowing bearer of a disease into the dynasty that made male heirs questionable propositions for the throne.
Given all this, I find it not the least bit surprising that almost all but Olga ended up arrayed against her. Olga must have been a kind and delightful person but, as she proved with Michael and Natasha, she was not a diligent guardian of the dynasty's political interests.
Conventional families might have viewed Alexandra as a bit of a prissy eccentric, to be indulged and even respected for her very real positive qualities. But very few
dynasties -- Romanovs or otherwise -- would have thought her anything but bad news.