A Shadowed Love by Fred M. White

It was a long time before Mary could speak. She had done a foolish thing on the impulse of the moment. From the instant that she recognised Venner's voice, her prudence had been cast to the winds. Perhaps the fact that she had lost herself had rendered her a trifle hysterical.

But she had done wrong. She had no business to have troubled about Cecilia at all. And that man had made her a kind of tool on the chance of his not being able to obtain an interview with his wife. She had come to Stanmere knowing that her father would sternly disapprove; indeed, why had he taken her from Stanmere in that mysterious manner unless there had been grave reasons?