Lost Man's Lane by Anna Katharine Green

Had I not surprised this look of mutual understanding, I might have received an impression of Miss Knollys which would in a measure have counteracted that made by the more nervous and less restrained Lucetta. The dignified reserve of her bearing, the quiet way in which she approached, and, above all, the even tones in which she uttered her welcome, were such as to win my confidence and put me at my ease in the house of which she was the nominal mistress. But that look! With that in my memory, I was enabled to pierce below the surface of this placid nature, and in the very constraint she put upon herself, detect the presence of the same secret uneasiness which had been so openly, if unconsciously, manifested by her sister.

She was more beautiful than Lucetta in form and feature, and even more markedly elegant in her plain black gown and fine lawn ruffles, but she lacked her sister's evanescent charm, and though admirable to all appearance, was less lovable on a short acquaintance.