Sleeping Fires by Gertrude Atherton

After Masters had assisted Mrs. Abbott's large bulk into her barouche, resisting the impulse to pitch it in headfirst, he walked slowly up the stairs. He was seething with fury, and he was also aghast. The woman had unquestionably precipitated the crisis he had hoped to avoid. To use her favorite expression, the fat was in the fire; and she would see to it that it was maintained at sizzling point. He ground his teeth as he thought of the inferences, the innuendos, the expectations, the constant linking of his name with Madeleine's. Madeleine!

It was true, of course, that the gossip might stop short of scandal if she entered the afternoon treadmill once more and showed herself so constantly that the most malignant must admit that she had no time for dalliance; it was well known that he spent the morning and late afternoon hours at the office.