Yes, Nixa asked Alexandr to marry Dagmar after the days when they ( Alexandr and Dagmar) everyday spent together near his bed.
I have found the explanation by one correspondent of an English newpaper of a day in the life of Alexandr III in one book : " The everyday habits of the tsar are hardly appropriate for a man of the world; his pastimes are more fit for a prisoner than for a monarch. He gets up at 7 a.m. , goes out for a walk in the strictly garded park, returns for breakfast and occupies himself with varied manual labour, as a preparation for the official occupations of the day. The latter consist chiefly in the reading and signing of enormous piles of edicts, drafts of laws, orders and reports. After lunch the tsar rests, goes in the park for a walk works or sometimes listens to the reading of the news ... A family dinner of four dishes is served at 8 o'clock. After dinner the tsar drinks shi tea in the empress's apartments where he always appears clad in a simple cotton blouse with a lether belt..."