Read it through once

“No, she’s a sly one,” he remarked, shaking his head. “She keeps her own counsel! But she’s a real little fool. I have it from good authority that last night (and a pretty night it was!) she and Heathcliff were walking in the plantation at the back of your house above two hours; and he pressed her not to go in again, but just mount his horse and away with him! My informant said she could only put him off by pledging her word of honour to be prepared on their first meeting after that: when it was to be he didn’t hear; but you urge Mr. Linton to look sharp!”