The Diva's Ruby by F. Marion Crawford

Margaret received her friend's letter and the account of Baraka's trial by the same post on the morning after she and Mr. Van Torp had been to hear _Parsifal_ together, and she opened the two envelopes before reading her other letters, though after assuring herself that there was nothing from Logotheti. He did not write every day, by any means, for he was a man of the world and he knew that although most women demand worship at fixed hours, few can receive it so regularly without being bored to the verge of exasperation. It was far better, Logotheti knew, to let Margaret find fault with him for writing too little than to spoil her into indifference by writing too much. Women are often like doctors, who order their patients to do ten things and are uncommonly glad if the patient does one.

So Margaret had no letter from Logotheti that morning, and she read Lady Maud's and the enclosure before going on to the unpaid bills, religious tracts, appeals for alms, advertisements of patent medicines, 'confidential' communications from manufacturers of motor cars, requests to sing for nothing at charity concerts, anonymous letters of abuse, real business letters from real business men, and occasional attempts at blackmail, which are the usual contents of a celebrity's post-bag, and are generally but thinly salted with anything like news from friends.