In Queer Street by Fergus Hume

Now that the long-expected blow had fallen, Hench was surprised to find how lightly he had been struck. Madame Alpenny having come at an inopportune moment for him, had made mischief, and for the time being it looked as though she was triumphing. But Owain felt certain that she was afraid; he had seen fear in her eyes when he met her so defiantly. If she had been quite sure of her position, she would not have given him a week to consider matters. It was not difficult to understand why she had done so. For the murder of Evans the woman cared very little, save as a means to force the man she accused to do what she wanted. Her aim was to secure a wealthy son-in-law, and she could only do that by threatening to tell the police about his fatal visit to Cookley. But if he refused to do her bidding and she did tell the police, then, so far as she was concerned, everything was at an end.

She would certainly get him into trouble, but she would not have him as her daughter's husband, nor would she get any money. Unwilling to push things too far, Madame Alpenny had therefore compromised by giving Hench seven days of grace.