A Lady of Rome by F. Marion Crawford

Maria did not send for Castiglione the next day, nor during a number of days afterwards, and Giuliana Parenzo saw that she was very much preoccupied and was not looking well. The elder woman was far too good a friend to ask questions, and when the two were together she did her best to amuse Maria by her talk. The Marchesa was not particularly witty, but she sometimes told a story with little touches of humour that were quite her own. Very good women are rarely witty, but they often have a happy faculty of seeing the funny side of things. Wit wounds, but humour disarms.

Giuliana saw, too, that Maria did not like to be alone, even with Leone. The truth was that she slept little and was very nervous. Something had come back from the past to haunt her; often a nameless horror came near her, not at night only, for it was not the fear of an overwrought imagination, but in broad daylight too, when she was alone and chanced to be doing nothing. It was the more dreadful because she could not define it; she could not say that it was caused by the question Castiglione had asked her, and which she had promised to answer, but when she thought of that her mind refused to be reasonable, and the horror came upon her, and she felt that utter ruin was close at hand, lying in wait for her.